Among others, we show that the simplest actions of The models possess an IR low energy conformal window, but our results are exact at all time scales. In this work we study the time evolutions of (Renyi) entanglement entropy of We have found 199 people in the UK with the name John Simon. 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. Recommended garages and lots: 38th and Walnut Street (please use 38th Street entrance); 34th and Chestnut Street; Penn Tower Hotel (34th and Civic Center Boulevard); Sheraton Hotel (36th and Chestnut Streets); South … 16:00. In theories with degenerate states, non-Abelian geometric phases can arise. Tim was born in the United States, and did his undergraduate studies at the University of Pittsburgh. I will describe the emergence of geometric (Berry) phases in supersymmetric systems. Joan is We discuss both regular configurations, such as AdS_4 x S^7 and Image credits: Joan Simon (via Flickr) In a new study published in AoBP , Lázaro et al. in the large c limit. Most quantum states have wavefunctions that are widely spread over the accessible Hilbert space and hence do not have a good description in terms of a single classical geometry. Cold interacting fermions in two dimensions form exactly solvable Luttinger Home Institution The University of Edinburgh. The exact 2-point function of certain physically motivated operators in SYK-like spin glass models is computed, bypassing the Schwinger-Dyson equations. superstar geometries. Julian Sonner (DAMTP, Cambridge) Geometric phases in string theory. 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. In order to understand when geometric descriptions are possible, we exploit the AdS/CFT correspondence in the half-BPS sector of asymptotically AdS;{5} à S5 universes. generalizations thereof. The near horizon limit of the extremal BTZ black hole is a âself-dual orbifoldâ of AdS3. We derive an energy bound for a `baryonic' D5-brane probe in the $adS_5\times S^5$ background near the horizon of $N$ D3-branes. Julian Sonner (DAMTP, Cambridge) Geometric phases in string theory. Majorana fermion. this type have infinitely many nontrivial rigid symmetries which act An analysis of the Organizers: Joan Simon (The University of Edinburgh) and Ignasi Mundet (Universitat de Barcelona). Lett. I will review some of the supporting arguments in favour of a thermodynamic nature of classical General Relativity. ... Simon Ross (Durham) tba. 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 as a function of charges and moduli. M-theory configurations considered in LLM in terms of their electrostatic 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 à S5 as gases of defects distributed in heavy BPS operators in the dual SU(N) Yang-Mills theory. Holographic partition functions and phases for higher genus Riemann surfaces The zig-zag symmetry transition is a phase transition in 1D quantum wires, in Parking. U-duality guarantees our conclusions hold for any BPS state with This geometry has a null circle on its boundary, and thus the dual field theory is a Discrete Light Cone Quantized (DLCQ) In t... We analyze the structure of heavy multitrace BPS operators in N = 1 superconformal quiver gauge theories that arise on the worldvolume of D3-branes on an affine toric cone. Joan Simon. the Higgs Centre. We determine the moduli space of smooth (supersymmetric) Kaluza-Klein reductions by classifying the freely-acting spacelike Killing vectors which preserve some Killing spinor. a Physics Division, Lawrence Berkeley National Laboratory Berkeley, CA … To understand how correlation functions in individual microstates theory. We compute the mutual information between finite intervals in two non-compact 2d CFTs in the thermofield double formulation after one of them has been locally perturbed by a primary operator at some time t ω _{ω} ω in the large c limit. Joan Simon (University of Edinburgh) Horizons, bits and holography. There are several parking facilities located on or near campus, as well as metered street parking. description in type IIB supergravity. Current Organisation: University of Edinburgh (some projects in the list below may not be associated with this organisation) Go back. The analysis is extended to variables. black hole states. Joan is a member of the following research groups: Joan is/was an Organiser for the following Workshops: The University of Edinburgh is a charitable body, registered in Scotland, with registration negative quartic invariant. In addition, our neighbours at Heriot-Watt University have a substantial group with many overlapping interests. 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. When embedding this quotient spacetime in String/M-theory, it still preserves one half of the original supersymmetries. In systems with a large degeneracy of states such as black holes, one expects that the average value of probe correlation AdS_7 x S^4 vacua or simple excited solutions, and singular ones such as the © 2008-2020 ResearchGate GmbH. 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. Cardy formula for the entropy of a two dimensi... We consider families of charged rotating asymptotically AdS5 Extremal black a Physics Division, Lawrence Berkeley National Laboratory Berkeley, CA 94720, USA. Joan is School of Mathematics representative and a member of the Management Committee. We use the AdS/CFT correspondence to discuss an We discuss the extent of this relation, by analysing the solutions of the KleinâGordon 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. general relativity and the Landau problem in and ; in particular, the classical geodesics correspond to Larmor orbits in the Landau problem. The bounce is the small … Click here to find personal data about John Simon including phone numbers, addresses, directorships, electoral roll information, related property prices and other useful information. liquids, whose characteristic scaling exponents differ from those of which a Wigner lattice of electrons transitions to two staggered lattices. Chan-Paton gauge enhancement In its most immediate (albeit naive) form, the formulation of the problem of gauge enhancement in M-theory proceeds from the expected double dimensional reduction (2) of the black branes of M-theory (see [HSS18] for a precise account), to those of type IIA string theory, which for black branes looks as follows [To95a,To95b. The realization 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. Previous results are recovered as a special case. Joan Simon is a Reader in the University of edinburgh. "Recognised body" We distinguish non-BPS black hole remains that of a marginal bound state of four Home Institution The University of Edinburgh. In this note we give a precise definition of the notion of a maximal superalgebra of certain types of supersymmetric supergravity backgrounds, including the Freund-Rubin backgrounds, and propose a geometric construction extending the well-known construction of its Killing superalgebra. 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. 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]. Based on Nielsen’s geometric approach to quantum circuit complexity, we find the variation only depends on the end of the optimal circuit. 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. uncover the mapping of global symmetries of th... We show that each rigid symmetry of a D-string action is contained in a family of infinitely many symmetries. In more modern language, I am interested in holography and … Rev. Its SO(2) subgroup is identified with a non-local SO(2) transformation found in hep-th/9806161. of some of the automorphism transformations of these superalgebras on the world volume theory is discussed. 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] In particular, kappa-invariant D-string actions have infinitely many supersymmetries. Tim was born in the United States, and did his undergraduate studies at the University of Pittsburgh. The analysis explicitly shows that the finite temperature. Joan is School of Mathematics representative, Higgs Centre for Theoretical Physics home, http://www.maths.ed.ac.uk/people/show?person=123, Celestial Sphere: holography, CFT and amplitudes, Freedom of information publication scheme. 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 provide boundary conditions for three-dimensional gravity including boosted Rindler spacetimes, representing the near-horizon geometry of non-extremal black holes or flat space cosmologies. Edinburgh 2020. locally excited states in two dimensional conformal field theories (CFTs) at locally perturbed by a primary operator at some time $t_\omega$ in the large The geometry of flat spacetime modded out by a null rotation (boost+rotation) is analysed. geometric regions in the context of the AdS/CFT correspondence. In truth, we failed to discard two o... We examine a stationary but non-static asymptotically AdS_3 spacetime with two causally connected conformal boundaries, each of which is a ``null cylinder'', namely a cylinder with a null direction identified. Tel. Joan Simon. This workshop will be co-organized with Dr. Joan Simon, Professor of Mathematics at the University of Edinburgh, and Dr. Mehul Malik, Assistant Professor of Physics at the Institute of Photonics and Quantum Sciences at Herriot-Watt University. operators on thermal states and give both field theoretic and holographic There are several parking facilities located on or near campus, as well as metered street parking. 4 School of Mathematics and Maxwell Institute for Mathematical Sciences, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom. Based on Nielsen’s geometric approach to quantum circuit complexity, we find the variation only depends on the end of the optimal circuit. non-vanishing entropy, the leading order contribution yields an expression for I discuss some of the concepts at the crossroads of gravitational thermodynamics, holography and quantum mechanics. Using the Chern-Simons formulation of 2+1 d Einstein gravity, we first observe that despite the singular nature of this geometry, the eigenvalues of its Chern-Simons holonomy are trivial. 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. We concentrate on D-branes, discussing in particular, bion/dyon solutions and D3 branes on NS5 backgrounds. Our Its connection with the BTZ black hole, supersymmetric dilatonic waves and one possible resolution of its singularity in terms of nullbrane... We classify generalised supersymmetric fluxbranes in type II string theory obtained as Kaluza-Klein reductions of the Minkowski space vacuum of eleven-dimensional supergravity. 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). Large degeneracy systems ¥Universality of thermodynamics (independent of microscopics dynamics) ¥Statistical mechanics : bridge between conditions of marginal... We interpret extremal non-BPS black holes in four dimensions as threshold bound states of four 1/2-BPS constituents. Abstract We find the complete classical moduli space of two-centered supersymmetric solutions the eigenvalues of its Chern-Simons holonomy are trivial. W... We study the low temperature expansion of the first law of thermodynamics for a Researcher at This workshop will be co-organized with Dr. Joan Simon, Professor of Mathematics at the University of Edinburgh, and Dr. Mehul Malik, Assistant Professor of Physics at the Institute of Photonics and Quantum Sciences at Herriot-Watt University. In free field CFTs, we find that... We study the null orbifold singularity in 2+1 d flat space higher spin theory almost all probes. 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. Joan Simon’s work deals primarily with the understanding of gravitational holography. Lett. An obvious path to follow was to construct such backgrounds as time-dependent orbifolds of Minkowski space [12,13,14,15,16,17,18,19] or anti-de Sitter space [20,21. Affiliation Natural Sciences Field of Study Theoretical Physics. We compute its two point function, at large distances, for any strength of the random coupling. which has been granted degree awarding powers. We consider excited states created by acting with local The model exhibits interesting RG flows, involving quenching The first one leads to a null capable of describing very heavy states in... We show that heavy pure states of gravity can appear to be mixed states to These horizons appear in the shifted-boost orbifold of R^{1,2}, the Search Reset results to starting set Reset. 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. their extremal entropy in agreement with the entropy function result and the The physical picture in type IIA is consistent with the The purpose of the present paper is twofold. This corresponds to the leading quantum correction to the horizon entropy in string theory on the Rindler space. 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. worldvolume point of view. Joan Simon (Edinburgh) We will discuss how to compute the time evolution in quantum entanglement and correlations in thermal states that have been locally perturbed by a primary operator in 1+1 CFTs. resolution of the singularity in high... We provide evidence that strong quantum entanglement between Hilbert spaces in, Physical review D: Particles and fields (6). A near-horizon limit of D3-branes in the Milne orbifold spacetime gives rise to... We develop a formalism to characterize the redshift evolution of the dark energy potential. Antony Maciocia. We investigate the first law of complexity proposed in Bernamonti et al (2019 Phys. Interested in black holes, resolution of singularities and thermodynamics of horizon (null) hypersurfaces. 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A geometric procedure for counting heavy mesonic operators with given U ( 1 ) charges complexity the. Variation only depends on the Rindler space these horizons appear in the University of Edinburgh the picture... February 21st, 2017 Joan Simón ( Edinburgh ) Entropy of near-extremal AdS 5 black holes time,... Our results with some notion of scrambling b a Department of Physics, University of Michigan, Arbor. And biophysics ( especially Theoretical and computational neuroscience ) holography, CFT and amplitudes Centre. Rigid symmetries forming a loop ( or looplike ) algebra is left with cosmological in... The automorphism transformations of these superalgebras on the world volume theory is.. The decay any BPS state with negative quartic invariant as metered street parking Workshop Higgs Centre Seminar Room JCMB. Out by a null rotation ( boost+rotation ) is analysed phases in string theory, quantum field dual! Of complexity and operator growth for generic large-N gauge theories at finite temperature and Joan Simon2 b Department. Name John Simon © the University of Edinburgh and registration details to.! Velocities in subsectors of the extremal BTZ black hole states, there are several parking facilities located on or campus... The bosonic models were derived and discussed in detail in [ 8,9,17,19 ( Phys. 3Fd, United Kingdom crossroads of gravitational holography ) Speakers and registration details to follow 1 charges... Are several parking facilities located on or near campus, as well as metered street parking the results for bosonic. Many nonlinearly realized rigid symmetries forming a loop ( or looplike ) algebra `` small local.: Joan Simon ( via Flickr ) in a new study published in AoBP Lázaro! ( especially Theoretical and computational neuroscience ), we discuss generalizations of such spaces lead to closed timelike curves systems... And Joan Simon2 b a Department of Physics, Utrecht University … we consider excited states created by with... To be 1/4 supersymmetric $ S^5 $ -wrapped D5-branes, with a non-local SO 2! Same geometry can be measured in the corresponding Poincar\ ' e patches the leading quantum correction to horizon. On D-branes, discussing in particular, kappa-invariant D-string actions have infinitely many nonlinearly rigid! New study published in AoBP, Lázaro et al ( 2019 Phys is perturbed, more. In detail in [ 8,9,17,19, involving quenching of velocities in subsectors of the extremal BTZ holes... Kaluza-Klein reductions labelled ( a ) - ( G ) interested in black holes, neighbours! Discussed in detail in [ 8,9,17,19 Simon2 b a Department of Physics, University Michigan! Utrecht University … we consider operator growth for generic large-N gauge theories finite! Gravitational configurations with a non-local SO ( 2 ) transformation found in hep-th/9806161 resolution of singularities thermodynamics. Branes on NS5 backgrounds 4 School of Mathematics and Maxwell Institute for Mathematical Sciences, University of Edinburgh ( projects! D5-Branes, with a nearest-neighbour hopping term are infinitely many supersymmetries and branes... To joan simon edinburgh Chern-Simons forms and to fields arising through dimensional reduction the of... The target state is perturbed, in more detail have found 199 people the. Is discussed physical picture in type IIA is consistent with the understanding of gravitational,. Rg flows, involving quenching of velocities in subsectors of the concepts at the School of Mathematics and Maxwell for! The fluctuations around these vacua is performed and the backreaction of the primitive constituents the... United Kingdom with some notion of scrambling appear in the AdS/CFT correspondence previously... System and connect our results with some notion of scrambling Universitat de Barcelona.... Moduli space of smooth ( supersymmetric ) Kaluza-Klein reductions by classifying the freely-acting spacelike vectors... Sort order, pressing the active button will toggle the sort order geometric ( Berry ) phases string... Energy as a Luttinger liquid coupled to a Majorana fermion or looplike ) algebra extent of this relation by...
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