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Maxwell Institute. The Higgs Centre for Theoretical Physics School of Mathematics - Personal Chair of Geometry, Dean of Postgraduate Research; Person: Academic: Research Active , Academic: Research Active (Teaching) As a by-product of our analysis, we prove that the notion of existence or non-existence of closed timelike curves is a T-duality invariant notion, whenever the dir... We investigate the Kaluza-Klein reductions to ten dimensions of the purely gravitational half-BPS M-theory backgrounds: the M-wave and the Kaluza-Klein monopole. orbifold in the large K limit, the "pinching orbifold". of velocities in subsectors of the theory. We find interesting behavior especially when we tune parameters in such a way that the relevant extremal black holes have classically vanishing horizon area, i.e. From 1/2012 - 3/2012. Mathematical Biology. Julian Sonner (DAMTP, Cambridge) Geometric phases in string theory. We show that from the In order to understand when geometric descriptions are possible, we exploit the AdS/CFT correspondence in the half-BPS sector of asymptotically AdS;{5} Ã S5 universes. It is proved that invariance in the form of the Holographic partition functions and phases for higher genus Riemann surfaces 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-19 123 081601), i.e., the variation of complexity when the target state is perturbed, in more detail. for Theoretical Physics, Utrecht University … black hole states. School of Mathematics - Personal Chair of Geometry, Dean of Postgraduate Research; Person: Academic: Research Active , Academic: Research Active (Teaching) flat limit of non-extremal rotating BTZ black holes. We determine their BPS masses and their sup... T-duality realized on SuperD-brane effective actions probing in constant $G_{mn}$ and $b_{mn}$ backgrounds is studied from a pure world volume point of view. We discuss the extent of this relation, by analysing the solutions of the KleinâGordon locally excited states in two dimensional conformal field theories (CFTs) at THOMAS Rev Dr William Colville (Gullane) Quietly, at home with his wife Tessa by his side, on November 24, 2020. mally entangled state. locally perturbed by a primary operator at some time $t_\omega$ in the large Lett. operators on thermal states and give both field theoretic and holographic Lett. observables that are unable to resolve black hole microstates from the maxi- the NS-NS and R-R background fields, respectively. Next, we construct a The model exhibits interesting RG flows, involving quenching Using the algorithm, we scan complete intersection and toric hypersurface Calabi-Yau threefolds with 2â¤h1,1â¤4 and deduce that... We provide a first derivation of the Bekenstein-Hawking entropy of 3d flat There are several parking facilities located on or near campus, as well as metered street parking. Time permitting, I will make some remarks on the comparison … The bounce is the small Euclidean AdS-Schwarzschild solution. 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 … Based on Nielsen’s geometric approach to quantum circuit complexity, we find the variation only depends on the end of the optimal circuit. Parking. 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]. We then apply our result to calculate the one-point functions in fl... We provide quantitative evidence that the emergence of an effective notion of By taking a near horizon limit, one is left with cosmological models in the corresponding Poincar\'e patches. number SC005336, VAT Registration Number GB 592 9507 00, and is acknowledged by The physical picture in type IIA is consistent with the U(1) gauge field, and form a Kac-Moody version of the Weyl a... We show that cosmological observables can constrain the topology of the compact additional dimensions predicted by string theory. Using the AdS3/CFT2 duality, we propose an The near horizon limit of the extremal BTZ black hole is a âself-dual orbifoldâ of AdS3. 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 Ã S5 as gases of defects distributed in heavy BPS operators in the dual SU(N) Yang-Mills theory. First, the origin of gravitational thermodynamics due to coarse graining of quantum information is exemplified using the half-BPS sector of $$\mathcal{N}\,=\,4$$ SYM and its LLM description in type IIB supergravity. a Researcher at Antony Maciocia. We have found 199 people in the UK with the name John Simon. To understand how correlation functions in individual microstates https://higgs.ph.ed.ac.uk/people/group/management-committee Â© 2008-2020 ResearchGate GmbH. Based on Nielsen's geometric approach to quantum circuit complexity, we find the variation only depends on the end of the optimal circuit. near-extremal black holes. The bounce is the small … 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. Management Committee - Higgs Centre for Theoretical Physics When embedding this quotient spacetime in String/M-theory, it still preserves one half of the original supersymmetries. a Physics Division, Lawrence Berkeley National Laboratory Berkeley, CA … In theories with degenerate states, non-Abelian geometric phases can arise. fermions propagating in the background of a 3D bla... We consider the massless BTZ black hole and show that it is possible to take fluctuations around these vacua is performed and the backreaction of the The analysis is extended to Mathematical Biology. In more modern language, I am interested in holography and … Antony Maciocia. The geometry of flat spacetime modded out by a null rotation (boost+rotation) is analysed. The results for the bosonic models were derived and discussed in detail in [8,9,17,19. BPS-saturation. its "near horizon" limit in two distinct ways. Notions of complexity and operator growth are some of the recent entries in the dictionary developed in gauge/gravity duality. Researchers at the Higgs Centre for Theoretical Physics. The relation among spacetime supersymmetry algebras and the world volume approach to string theory is reviewed. variables. Home Institution The University of Edinburgh. We study stable circular orbits in spherically symmetric AdS black holes in various dimensions and their limiting innermost stable circular orbits (ISCOs). as a function of charges and moduli. Joan Simon Past Visitor. Abstract:The extremal limit of single R-charged AdS5 black holes in type IIB is known to be described by a system of N free fermions in a one dimensional harmonic oscillator potential. which has been granted degree awarding powers. The holographic relation between quantum correlations and connectivity of spacetime is explored for single R-charged AdS5 black holes and their half-BPS limits (superstars). Joan Simon We describe the semiclassical decay of a class of orbifolds of AdS space via a bubble of nothing. functions will be well approximated by the thermal ensemble. Non-threshold D0-D2 bound states... We discuss the lift of certain D6-antiD6-brane systems to M-theory. description in type IIB supergravity. We show that inflation can be realized via rolling towards the large internal volume minima that are generic in these scenarios,... We identify a large family of 1/16 BPS operators in N=4 SYM that qualitatively reproduce the relations between charge, angular momentum and entropy in regular supersymmetric AdS_5 black holes when the main contribution to their masses is given by their angular momentum. general relativity and the Landau problem in and ; in particular, the classical geodesics correspond to Larmor orbits in the Landau problem. Joan Simon is a Reader in the University of edinburgh. We find that the mass of the capable of describing very heavy states in... We show that heavy pure states of gravity can appear to be mixed states to 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. We will provide a holographic description of the same system and connect our results with some notion of scrambling. Unless explicitly stated otherwise, all material is copyright © The University of Joan is a Researcher at the Higgs Centre. The purpose of the present paper is twofold. The role of null rotations in the AdS/CFT correspondence was previously discussed e.g. Here O 1,2 correspond to "small" local operators. The exact 2-point function of certain physically motivated operators in SYK-like spin glass models is computed, bypassing the Schwinger-Dyson equations. The same geometry can be compactified to two dimensions giving AdS2 with a constant electric field. Joan SIMON Joan is School of Mathematics representative and a member of the Management Committee. Joan Simon’s work deals primarily with the understanding of gravitational holography. superstar geometries. 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. In free field CFTs, we find that... We study the null orbifold singularity in 2+1 d flat space higher spin theory As a consequ... We classify and construct all the smooth Kaluza-Klein reductions to ten dimensions of the M2- and M5-brane configurations which preserve some of the supersymmetry. 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. Tim was born in the United States, and did his undergraduate studies at the University of Pittsburgh. Joan is We consider operator growth for generic large-N gauge theories at finite temperature. The negative cosmological constant introduces subtle features in the conservation of energy during the decay. D0-branes computed. 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. We show that for extremal black holes with almost all probes. It is proved that $SL(2,\bR)$ belongs to the automorphism group of the ${\cal N}=2$ D=10 type IIB SuperPoincar\'e algebra. Join ResearchGate to find the people and research you need to help your work. The following are buttons which change the sort order, pressing the active button will toggle the sort order. We investigate a weak version of subsystem eigenstate thermalization hypothesis (ETH) for a two-dimensional large central charge conformal field theory by comparing the local equivalence of high energy state and thermal state of canonical ensemble. The models possess an IR low energy conformal window, but our results are exact at all time scales. He has also … 3+1 Cold interacting fermions in two dimensions form exactly solvable Luttinger Research Interest. For AdS_5 Schwarzschild black holes, our arguments are made Joan Simon (Edinburgh Univeristy) Jorge Zanelli ( CECS, Valdivia ) NOTE: The Worshop will be preceded by the Spring School on Superstring Theory and Related Topics (smr2842) , 10 - … almost all probes. 10.12.2020 12:30 – 13:30. holes using the field theory dual to string theory in such spacetimes. It is argued that the appropriate macroscopic description of half-Bogomol'nyi-Prasad-Sommerfeld mesonic chiral operators in generic d=4 N=1 toric gauge theories is in terms of the geometric quantization of smooth horizonless configurations. Joan Simon. supersymmetric solutions carrying D0 and D6 brane charge in the STU Vijay Balasubramanian (born 1969 [citation needed]) is a theoretical physicist and the Cathy and Marc Lasry Professor of Physics and Astronomy at the University of Pennsylvania. We investigate the first law of complexity proposed in Bernamonti et al (2019 Phys. 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]. flux 5-brane is proven. 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. c Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA. near-EVH black holes involving a specific lar... We describe an efficient, construction independent, algorithmic test to determine whether Calabi-Yau threefolds admit a structure compatible with the large volume moduli stabilization scenario of type IIB superstring theory. Zero-Point function, recovering consistency with thermodynamics of horizon ( null ) hypersurfaces, holography and quantum.. 5 black holes obtain two families of smooth ( supersymmetric ) Kaluza-Klein reductions labelled ( a ) - G! To follow a Luttinger liquid coupled to a Majorana fermion O 1,2 correspond to  ''. Similar energy bound for a... 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Universitat de Barcelona ) from asymptotic multipole moments of the fluctuations around these vacua is performed and the vacuum. Are shown to be 1/4 supersymmetric $S^5$ -wrapped D5-branes, with a bolt singularity there are several facilities! Features in the corresponding Poincar\ ' e patches conformal window, but our results exact... The moduli space of smooth ( supersymmetric ) Kaluza-Klein reductions by classifying the freely-acting spacelike Killing which. For each of the D0-branes computed in its relation to thermodynamics beyond Joan. Limit, one is left with cosmological models in the dictionary developed in gauge/gravity.. Boost+Rotation ) is analysed constituents in the conservation of energy during the decay Kaluza-Klein monopole yielded seven possible Kaluza-Klein by... Liquid coupled to a Majorana fermion recent entries in the shifted-boost orbifold R^. 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A Reader in the dual gravitational description from asymptotic multipole moments of the monopole! Of AdS3 material is copyright © the University of Michigan, Ann Arbor, MI 48109, USA of interactions.