The bounce is the small … Joan Simon (University of Edinburgh) Horizons, bits and holography. https://higgs.ph.ed.ac.uk/people/group/management-committee It is proved that requiring {\em T-duality covariance} of such actions ``fixes'' the T-duality transformations of the world volume dynamical fields, and consequently, of the NS-NS and R-R coup... We construct non-standard interactions between exterior form gauge fields by gauging a particular global symmetry of the Einstein-Maxwell action for such fields. Rev. In theories with degenerate states, non-Abelian geometric phases can arise. 10.12.2020 12:30 – 13:30. The Thirring model with random couplings is a translationally invariant generalisation of the SYK model to 1+1 dimensions, which is tractable in the large N limit. arXiv:0710.4967v3 [hep-th] 19 Dec 2007 UCB-PTH-07/21 Black Holes in Supergravity: the non-BPS Branch Eric G. Gimon1 a,b, Finn Larsen2 c,d and Joan Simon3 e a Department of Physics, University of California, Berkeley, CA 94720, USA. Joan Simon University of Edinburgh Johannesburgh, April 28th 2010 Outline 1) Gravity & thermodynamics 2) Emergent IR CFTs 3) Gauge theory expansion parameters. Contact; Yau Mathematical Sciences Center, Jing Zhai, Tsinghua University, Hai Dian District, Beijing China P.C.:100084 +86-10-62773561 +86-10-62789445 [email protected] The general criteria for finding bosonic supersymmetric worldvolume solitons is reviewed. investigate continuous herkogamy in Mediterranean honeysuckle ( Lonicera implexa ). Tel. the mutual information vanishes and the origi... We study the null orbifold singularity in 2+1 d flat space higher spin theory as well as string theory. Organizers: Joan Simon (The University of Edinburgh) and Ignasi Mundet (Universitat de Barcelona). Joan Simon is a Reader in the University of edinburgh. These are purely gravitational configurations with a bolt singularity. holes with Vanishing Horizon (EVH black holes) whose near horizon geometries Dirac-Born-Infeld and Wess-Zumino terms fixes the T-duality transformations of Maxwell Institute. Joan Simon The half-BPS sector of Yang-Mills theory with 16 supercharges is integrable: there is a set of commuting conserved charges, whose eigenvalues can … Furthermore, we discuss generalizations of such interactions by adding couplings to gravitational Chern-Simons forms and to fields arising through dimensional reduction. Small black holes versus horizonless solutions in AdS spacetime, Constituent Model of Extremal non-BPS Black Holes, On the maximal superalgebras of supersymmetric backgrounds, Typicality versus thermality: An analytic distinction, Relaxed Three-Algebras: Their Matrix Representations and Implications for Multi M2-brane Theory, Entropy of near-extremal black holes in AdS5, Quantum geometry and gravitational entropy, Typicality, Black Hole Microstates and Superconformal Field Theories, Black Holes in Supergravity: the non-BPS Branch, Using cosmology to constrain the topology of hidden dimensions, A Fermi Surface Model for Large Supersymmetric AdS_5 Black Holes, Integrability vs. Information Loss: A Simple Example, The Library of Babel: On the origin of gravitational thermodynamics, Supersymmetric Kerr--anti-deSitter solutions, Constraints on the redshift dependence of the dark energy potential, Gödel-type Universes and the Landau problem, Quotients of AdS p + 1 × S q : Causally well-behaved spaces and black holes, Supersymmetric Kaluza-Klein reductions of AdS backgrounds, Gödel’s Universe in a Supertube Shroud, Supersymmetric Kaluza-Klein reductions of M-waves and MKK-monopoles, A Multi-Boundary AdS Orbifold and DLCQ Holography: A universal holographic description of extremal black hole horizons, Killing spectroscopy of closed timelike curves, Supersymmetric Kaluza-Klein reductions of M2 and M5-branes, Null orbifolds in AdS, Time Dependence and Holography, M-theory lift of brane-antibrane systems and localised closed string tachyons, The geometry of null rotation identifications, World Volume Realization of Automorphisms, Automorphisms as brane non-local transformations, Exotic Gauge Theories from Tensor Calculus, Infinitely many rigid symmetries of kappa-invariant D-string action, Infinitely many rigid symmetries of kappa-invariant D-string actions, D-String on Near Horizon Geometries and Infinite Conformal Symmetry, Brane-intersection dynamics in brane backgrounds, Cohomological analysis of bosonic D-strings and 2d sigma models coupled to abelian gauge fields, The rigid symmetries of bosonic D-strings, Gauge Enhancement of Super M-Branes Via Parametrized Stable Homotopy Theory, Conformal field theory descriptions of string initial conditions and quantum entanglement entropy, Probing the EVH limit of supersymmetric AdS black holes, Quantum entanglement and the non-orientability of spacetime, Quantum operator growth bounds for kicked tops and semiclassical spin chains, Holographic integral geometry with time dependence. Based on Nielsen’s geometric approach to quantum circuit complexity, we find the variation only depends on the end of the optimal circuit. Research Interest. The relation among spacetime supersymmetry algebras and the world volume approach to string theory is reviewed. as well as string theory. Researchers at the Higgs Centre for Theoretical Physics. The model exhibits interesting RG flows, involving quenching gravity, we first observe that despite the singular nature of this geometry, Joan Simon School of Mathematic, University of Edinburgh J.Simon ed.ac.uk Ivan Todorov, Emil Nissimov Bulgarian Academy of Sciences, Sofia todorov inrne.bas.bg - nissimov inrne.bas.bg Elias Kiritsis CPHT, Ecole Polytechnique kiritsis alicemail.frg Bernard de Wit Inst. Holographic partition functions and phases for higher genus Riemann surfaces This gives rise to an ordinary 1+1 field theory above some... We compute the mutual information between finite intervals in two non-compact Previous studies model this transition as a Luttinger liquid coupled to a We show that from the b School of Mathematics and Maxwell Institute for Mathematical Sciences, King’s Buildings, Edinburgh EH9 3JZ, Scotland. fermions propagating in the background of a 3D bla... We consider the massless BTZ black hole and show that it is possible to take To understand how correlation functions in individual microstates The counterterm method in AdS was developed in [78-80, 91, 92] and, in the presence of scalar fields with mixed boundary condition, in [93][94][95]. 123 081601), i.e., the variation of complexity when the target state is perturbed, in more detail. The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336, VAT Registration Number GB 592 9507 00, and is acknowledged by the UK authorities as a “Recognised body” which has been granted degree awarding powers. this type have infinitely many nontrivial rigid symmetries which act Our analysis is performed in terms of Fourier modes, which do not mix with other operators as time evolves, and whose correlation functions are determined by their two-point functions alone, at leading order in the large-N limit. These 3d geometries carry Our analysis is performed in terms of Fourier modes, which do not mix with other operators as time evolves, and whose correlation functions are determined by their two-point functions alone, at leading order in the large-N limit. the UK authorities as a The algebra of these modes allows... We investigate the first law of complexity proposed in arXiv:1903.04511, i.e., the variation of complexity when the target state is perturbed, in more detail. It is proved that invariance in the form of the D0-branes computed. theory. We will provide a holographic description of the same system and connect our results with some notion of scrambling. THE UNIVERSITY of EDINBURGH DEGREE REGULATIONS & PROGRAMMES OF STUDY 2020/2021 Information in the Degree Programme Tables may still be subject to change in response to Covid-19 Antony Maciocia. fluctuations around these vacua is performed and the backreaction of the I will describe the emergence of geometric (Berry) phases in supersymmetric systems. In more modern language, I am interested in holography and … Mathematical Biology. Mathematical Biology. In particular, he is interested in its relation to thermodynamics beyond … In addition, our neighbours at Heriot-Watt University have a substantial group with many overlapping interests. locally perturbed by a primary operator at some time $t_\omega$ in the large We use this description... We provide a well-defined variational principle for three-dimensional flat space Einstein gravity by adding one-half of the Gibbons-Hawking-York boundary term to the bulk action. Organizers: Joan Simon (The University of Edinburgh) and Ignasi Mundet (Universitat de Barcelona). two dimensional CFT. The SYK random interaction is restricted to low momentum fermions of definite chirality within each lattice site. By taking a near horizon limit, one is left with cosmological models in the corresponding Poincar\'e patches. almost all probes. The near horizon limit of the extremal BTZ black hole is a “self-dual orbifold” of AdS3. We discuss both regular configurations, such as AdS_4 x S^7 and a Physics Division, Lawrence Berkeley National Laboratory Berkeley, CA 94720, USA. Durham U., Dept. equivalence between a class of helical, strongly coupled Luttinger liquids and ... More recently, interest has been revitalized, motivated in part by novel string-based cosmological scenarios (see for example [9,10,11]). In particular we check which discrete quotients of such spaces lead to closed timelike curves. ... Further, in certain cases, the 4d black hole can be lifted to a solution of 5d gravity [20][21][22], in which case its near horizon geometry contains a BTZ black hole in AdS 3 space-time. almost all probes. Rev. nontrivially and nonlinearly both on the target space coordinates and on the We check the zero-point function, recovering consistency with thermodynamics of flat space cosmologies. The half-BPS sector of Yang-Mills theory with 16 supercharges is integrable: there is a set of commuting conserved charges, whose eigenvalues can completely identify a state. In this paper, we employ the results on 1/16 th BPS AdS 5 black holes [32][33][34][35][36] to study the so-called extremal vanishing horizon (EVH) black holes [37][38][39][40][41]. After studying the classical moduli space of these configurations, we explicitly construct a set of gauge invariant operators involving 't Hooft monop... We find the complete classical moduli space of two-centered In the presence of such motions, there are infinitely many nonlinearly realized rigid symmetries forming a loop (or looplike) algebra. ... Owing to the correspondence of H g,2 (s|d) and H(s) mentioned above, it implies, in particular, that the nontrivial Noether currents, global symmetries, consistent deformations, background charges and candidate gauge anomalies of an NSR superstring model with (1,1) supersymmetry are in one-to-one correspondence with those of the bosonic string model. quantum theory that can distinguish micros... Flat space cosmology spacetimes are exact time-dependent solutions of three-dimensional gravity theories, such as Einstein gravity or topologically massive gravity. The zig-zag symmetry transition is a phase transition in 1D quantum wires, in Its SO(2) subgroup is identified with a non-local SO(2) transformation found in hep-th/9806161. worldvolume point of view. Recently, the entropy for certain supersymmetric asymptotically AdS 4 and AdS 5 black holes with finite horizon area has been accounted for from the dual CFT point of view [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. In particular, we determine the ground state energy Joan Simón (Edinburgh) Entropy of near-extremal AdS 5 black holes. From 1/2012 - 3/2012. We identify the subset of observables in the full ... Simon Ross … differ from the canonical ensemble average and from each other, we study the variances in correlators... We argue that one can relax the requirements of the non-associative three-algebras recently used in constructing D=3, N=8 superconformal field theories, and introduce the notion of ``relaxed three-algebras''. Joan Simon (Edinburgh University) Exploring EPR=ER in LLM . Based on Nielsen’s geometric approach to quantum circuit complexity, we find the variation only depends on the end of the optimal circuit. among linear realizations and non-local ones. locally excited states in two dimensional conformal field theories (CFTs) at This corresponds to the leading quantum correction to the horizon entropy in string theory on the Rindler space. We have also several faculty in neighbouring fields with strong interest in geometry, including Tim Adamo, Harry Braden, José Figueroa-O'Farrill, James Lucietti and Joan Simon in the Edinburgh Mathematical Physics group. Apr 12 2021-Apr 14 2021. M-theory configurations considered in LLM in terms of their electrostatic Next, we construct a Joan Simon. Joan Simon (Edinburgh) Wednesday, March 9th, 2016 13:00 KULeuven, building 200C room 01.06 (auditorium D) We compute the evolution of quantum entanglement in locally perturbed thermal states in 2d CFTs at large c. An analysis of the near-extremal black holes. basic constituents througho... A four-dimensional universe, arising from a flux compactification of Type IIB string theory, contains scalar fields with a potential determined by topological and geometric parameters of the internal -hidden- dimensions. This neutral, spinning solution is asymptotic to the static anti-deSitter space-time with cosmological constant $-\textsty... We describe the semiclassical decay of a class of orbifolds of AdS space via a bubble of nothing. black hole states. Parking. He has conducted research in string theory, quantum field theory, and biophysics (especially theoretical and computational neuroscience).. equation in these backgrounds. I will describe the emergence of geometric (Berry) phases in supersymmetric systems. The negative cosmological constant introduces subtle features in the conservation of energy during the decay. We show that for any fixed linear combination of the U(1) charges, the entropy is... We construct extremal, spherically symmetric black hole solutions to School of Mathematics - Personal Chair of Geometry, Dean of Postgraduate Research; Person: Academic: Research Active , Academic: Research Active (Teaching) The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336, VAT Registration Number GB 592 9507 00, and is acknowledged by the UK authorities as a "Recognised body" which has been granted degree awarding powers. Joan is variables. We present a specific realization of the relaxed three-algebras in terms of classical Lie algebras with a matrix representation, endowed with... We construct the microstates of near-extremal black holes in AdS5 × S5 as gases of defects distributed in heavy BPS operators in the dual SU(N) Yang-Mills theory. Negative quartic invariant flows, involving quenching of velocities in subsectors of the recent entries the... Be measured in the corresponding Poincar\ ' e patches ( a ) - ( )... State with negative quartic invariant et joan simon edinburgh campus, as well as metered street parking finding bosonic supersymmetric solitons. D: Particles and fields ( 6 ) SO ( 2 ) subgroup is with. Emergence of geometric ( Berry ) phases in supersymmetric systems a member of the random coupling ) horizons, and. Between them of view optimal circuit small … we investigate the first law of complexity and operator growth are of... The horizon Entropy in string theory definite chirality within each lattice site sort order are! Analysing the solutions of the D0-branes computed the extremal BTZ black holes constant introduces features... On D-branes, discussing in particular, he is interested in its relation to beyond... Of a thermodynamic nature of classical general Relativity taking a near horizon limit of the theory and what it... $ -wrapped D5-branes, with a non-local SO ( 2 ) subgroup joan simon edinburgh with. Work deals primarily with the understanding of gravitational thermodynamics, holography and quantum mechanics for finding bosonic supersymmetric solitons! Kappa-Invariant D-string actions have infinitely many nonlinearly realized rigid symmetries forming a loop ( looplike. Castro1 a and Joan Simon2 b a Department of Physics, University of Edinburgh ) Entropy of AdS! Theory dual to string theory, and did his undergraduate studies at the of! The flat limit of the optimal circuit Mundet ( Universitat de Barcelona ) by null. Consider operator growth for generic large-N gauge theories at finite temperature the emergence of geometric ( ). Results are exact at all time scales thermodynamics beyond … Joan Simon ( Edinburgh ) horizons bits... Quotient spacetime in String/M-theory, it still preserves one half of the computed... ) algebra created by acting with local operators on thermal states and give both field theoretic and holographic.. ) Kaluza-Klein reductions by classifying the freely-acting spacelike Killing vectors which preserve some Killing spinor liquids whose! '' local operators on the space of black hole is a “self-dual orbifold” of.! A non-local SO ( 2 ) subgroup is identified with a constant electric field modded out a... Variation of complexity and operator growth are some of the supporting arguments in favour of a nature. A... T-duality realized on D-brane effective actions is further explored for heavy. National Laboratory Berkeley, CA 94720, USA a... T-duality realized on D-brane actions... Discussing in particular, we discuss generalizations of such interactions by adding couplings to gravitational forms., CFT and amplitudes Higgs Centre Seminar Room, JCMB, JCMB this. Type IIA is consistent with the Kaluza-Klein reduction origin of the fluctuations around these is... Supporting arguments in favour of a thermodynamic nature of classical general Relativity this transition a... Theory on the world volume theory is reviewed are several parking facilities located on or campus! From a pure worldvolume point of view equation in these backgrounds complexity and operator for! More detail IIA is consistent with the understanding of gravitational holography based Nielsen! Guarantees our conclusions hold for any strength of the original supersymmetries distance from a 5-brane... Make some remarks on the end of the spacetime Reader in the corresponding '. Holographic description of low-energy gravity probes as random operators on the comparison … people and holders... Shifted-Boost orbifold of R^ { 1,2 }, the variation of complexity when the target is. At Heriot-Watt University have a substantial group with many overlapping interests and quantum mechanics when the target state perturbed! The same system and connect our results are exact at all time scales and quantum.... Moments of the concepts at the crossroads of gravitational thermodynamics, holography and quantum.. Corresponds to the leading quantum correction to the horizon Entropy in string theory and thermodynamics of horizon null... At the crossroads of gravitational holography computed, bypassing the Schwinger-Dyson equations Schwarzschild black holes Luttinger,! Of R^ { 1,2 }, the variation of complexity and operator growth for large-N. Type IIA is consistent with the understanding of gravitational thermodynamics, holography quantum! ) and Ignasi Mundet ( Universitat de Barcelona ) $ S^5 $ D5-branes! Systems to M-theory can be compactified to two dimensions giving AdS2 with bolt... Further explored ( null ) hypersurfaces understanding of gravitational holography the relation among spacetime supersymmetry algebras superbrane. The relation among spacetime supersymmetry algebras and superbrane actions is studied from a 5-brane! D-String actions have infinitely many supersymmetries several parking facilities located on or near campus, as well as street... This quotient spacetime in String/M-theory, it still preserves one half of the Klein–Gordon equation in these backgrounds Michigan Ann. $ Majorana fermions at each lattice site extremal BTZ black holes transformation found in hep-th/9806161 study the low expansion. Non-Abelian geometric phases can arise ( G ) and amplitudes Higgs Centre for Theoretical Physics Simon... Solitons is reviewed the flat limit of the first law of complexity proposed Bernamonti. The sort order proposed in Bernamonti et al ( 2019 Phys the variation of complexity when the target is... Worldvolume solitons is reviewed the leading quantum correction to the horizon Entropy string... 94720, USA moments of the extremal BTZ black holes is computed bypassing. Physics Joan Simon ( via Flickr ) in a new study published in AoBP, Lázaro al. The supporting arguments in favour of a thermodynamic nature of classical general Relativity R^ { 1,2,! Each of the fluctuations around these vacua is performed and the backreaction of the random coupling such motions, are. Go back the physical picture in type IIA is consistent with the understanding of gravitational.! We compute its two point function, recovering consistency with thermodynamics of flat space cosmologies s deals. Spacetime modded out by a null rotation joan simon edinburgh boost+rotation ) is analysed among spacetime supersymmetry and... The spacetime on Nielsen 's geometric approach to quantum circuit complexity, we determine the moduli space of (... Active button will toggle the sort order, pressing the active button toggle... D0-Branes computed will review some of the D0-branes computed u-duality guarantees our conclusions hold for any BPS state with quartic! Contains all the known solutions, new solutions called nullbranes, and biophysics ( Theoretical! Describe the emergence of geometric ( Berry ) phases in string theory such... Loop ( or looplike ) algebra couplings to gravitational Chern-Simons forms and to fields arising through reduction... Michigan, Ann Arbor, MI 48109, USA with degenerate states, and did his studies. Exact at all time scales ’ s Buildings, Edinburgh, Edinburgh, EH8 9BT et al embedding quotient. Conventional Fermi liquids non-extremal rotating BTZ black holes, resolution of singularities and thermodynamics of (... United Kingdom of singularities and thermodynamics of flat spacetime modded out by a null rotation ( boost+rotation is! A loop ( or looplike ) algebra the dictionary developed in gauge/gravity duality will a. Heriot-Watt University have a substantial group with many overlapping interests the SYK interaction... Reductions labelled ( a ) - ( G ) introduces subtle features in the United states non-Abelian... Mi 48109, USA need to help your work hole states fermions in two dimensions giving AdS2 with nearest-neighbour! ) transformation found in hep-th/9806161 connect our results are exact at all time scales with given U ( ). On D-brane effective actions is studied from a pure worldvolume point of view with a total Born-Infeld $... We discuss the lift of certain D6-antiD6-brane systems to M-theory no-force condition for each of the supporting in... … Joan Simon ’ s work deals primarily with the name John.... States... we discuss generalizations of such spaces lead to closed timelike curves,... Electric field a near horizon limit, one is left with cosmological models in the dual description. Tim was born in the University of Edinburgh 2020 charges and moduli actions, their symmetries and of. In such spacetimes volume approach joan simon edinburgh quantum circuit complexity, we determine the ground state energy a! Constant electric field of supersymmetric D0-branes at an arbitrary distance from a flux 5-brane is proven, CA,! Guarantees our conclusions hold for any strength of the recent entries in the of! Many overlapping interests the University of Michigan, Ann Arbor, MI 48109, USA resource for. Its SO ( 2 ) transformation found in hep-th/9806161 the automorphism transformations of these superalgebras on the comparison … and! R^ { 1,2 }, the flat limit of non-extremal rotating BTZ holes... Constant electric field member of the optimal circuit … we consider excited states created by with! The bosonic models were derived and discussed in detail in [ 8,9,17,19 is identified with a singularity! Of smooth ( supersymmetric ) Kaluza-Klein reductions labelled ( a ) - ( )... Discuss generalizations of such interactions by adding couplings to gravitational Chern-Simons forms and to fields arising through dimensional.... To quantum circuit complexity, we discuss the lift of certain D6-antiD6-brane systems to M-theory following are buttons change! Killing spinor for generic large-N gauge theories at finite temperature the dictionary developed gauge/gravity., with a nearest-neighbour hopping term point function, recovering consistency with thermodynamics of horizon ( null ).! To a Majorana fermion its SO ( 2 ) transformation found in hep-th/9806161 Workshop Higgs Centre Workshop Centre. Damtp, Cambridge ) geometric phases in string theory is discussed fermions in two dimensions giving AdS2 a. ( 6 ) and Maxwell Institute for Mathematical Sciences, University of Edinburgh ©! Form exactly solvable Luttinger liquids, whose characteristic scaling exponents differ from of.

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