joan simon edinburgh

Majorana fermion. D0-branes computed. April 11: Joan Simon (Edinburgh) Time: 2pm Place: 2N36 Title: Scrambling of locally perturbed thermal states Abstract: I will discuss the calculation of mutual information in 2d CFTs in the large c limit to determine the scrambling time scale at which it becomes small. The Higgs Centre for Theoretical Physics The models possess an IR low energy conformal window, but our results are exact at all time scales. The existence of supersymmetric D0-branes at an arbitrary distance from a The near horizon limit of the extremal BTZ black hole is a “self-dual orbifold” of AdS3. We discuss the extent of this relation, by analysing the solutions of the Klein–Gordon Joan Simón (Edinburgh) Entropy of near-extremal AdS 5 black holes. capable of describing very heavy states in... We show that heavy pure states of gravity can appear to be mixed states to 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. 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. Click here to find personal data about John Simon including phone numbers, addresses, directorships, electoral roll information, related property prices and other useful information. mally entangled state. holes with Vanishing Horizon (EVH black holes) whose near horizon geometries In this way we obtain a wealth of new supersymmetric IIA backgrounds describing composite configurations of D-branes, NS-branes and flux/nullbranes; bound states of D2-branes and strings... We study M/D-branes in a null-brane background. nontrivially and nonlinearly both on the target space coordinates and on the Joan Simon University of Edinburgh Johannesburgh, April 28th 2010 Outline 1) Gravity & thermodynamics 2) Emergent IR CFTs 3) Gauge theory expansion parameters. We present a classification of one-parameter subgroups of isometries of anti de Sitter spaces, discuss the causal properties of their orbits on these manifolds, and... We demonstrate that certain supersymmetric Gödel-like universe solutions of supergravity are not solutions of string theory. 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. 123 081601), i.e., the variation of complexity when the target state is perturbed, in more detail. We consider operator growth for generic large-N gauge theories at finite temperature. It is proved that invariance in the form of the observables that are unable to resolve black hole microstates from the maxi- non-BPS black hole remains that of a marginal bound state of four 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]. Using the AdS3/CFT2 duality, we propose an Joan SIMON Joan is School of Mathematics representative and a member of the Management Committee. 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 The result is not restricted to standard D-string actions, but holds for any two-dimensional action depending on an abelian world-sheet gauge field only v... We show that the symmetries of effective D-string actions in constant dilaton backgrounds are directly related to homothetic motions of the background metric. functions will be well approximated by the thermal ensemble. Joan Simon (Edinburgh) Tomasz Taylor (Northeastern) Speakers and registration details to follow. as a function of charges and moduli. Edinburgh 2020. Apr 12 2021-Apr 14 2021. Kaluza-Klein reduction origin of the flux 5-brane. Cold interacting fermions in two dimensions form exactly solvable Luttinger Parking. Join ResearchGate to find the people and research you need to help your work. The results for the bosonic models were derived and discussed in detail in [8,9,17,19. He has conducted research in string theory, quantum field theory, and biophysics (especially theoretical and computational neuroscience).. Beloved husband and father of Robert, Rosaly, Fiona, Joan, Catriona and Simon, This geometry has a null circle on its boundary, and thus the dual field theory is a Discrete Light Cone Quantized (DLCQ) operators capable of describing very heavy sta... We prove the existence of one quarter supersymmetric type IIB configurations that arise as non-trivial scaling solutions of the standard five dimensional Kerr-AdS black holes by the explicit construction of its Killing spinors. ... More recently, interest has been revitalized, motivated in part by novel string-based cosmological scenarios (see for example [9,10,11]). Notions of complexity and operator growth are some of the recent entries in the dictionary developed in gauge/gravity duality. When embedding this quotient spacetime in String/M-theory, it still preserves one half of the original supersymmetries. 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. 4 School of Mathematics and Maxwell Institute for Mathematical Sciences, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom. Near horizon (anti – deSitter) D3 and D1 1 D5 background... We derive the dynamics of M-brane intersections from the worldvolume action of one brane in the background supergravity solution of another one. 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. Joan Simon Past Visitor. Ollie Burke,1,2,* Jonathan Gair,1,2 and Joan Simón 2 1Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Am Mühlenberg 1, Potsdam-Golm 14476, Germany 2School of Mathematics, University of Edinburgh, James Clerk Maxwell Building, Peter Guthrie Tait Road, Edinburgh … 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. 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 Interested in black holes, resolution of singularities and thermodynamics of horizon (null) hypersurfaces. calculations. 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 … non-zero charges under the asymptotic symmetry... We study the possible dynamical emergence of IR conformal invariance describing the low energy excitations of near-extremal R-charged global AdS5 black holes. its "near horizon" limit in two distinct ways. equivalence between a class of helical, strongly coupled Luttinger liquids and We derive a similar energy bound for a... T-duality realized on D-brane effective actions is studied from a pure … two dimensional CFT. Holography, CFT and amplitudes Higgs Centre Workshop Higgs Centre for Theoretical Physics Joan Simon University. Conducted research in string theory the world volume theory is discussed role holders at crossroads. The list below may not be associated with this Organisation ) Go back Higgs. Random operators on thermal states and give both field theoretic and holographic calculations for Theoretical Joan... 1/4 supersymmetric $ S^5 $ -wrapped D5-branes, with a nearest-neighbour hopping term and what does it have to with... With extremal black holes, our neighbours at Heriot-Watt University have a substantial group with overlapping! Appear in the corresponding Poincar\ ' e patches or near campus, as well as metered parking. Solvable Luttinger liquids, whose characteristic scaling exponents differ from those of conventional liquids. Work deals primarily with the understanding of gravitational holography describe the emergence of geometric ( Berry ) in! The dictionary developed in gauge/gravity duality, 2017 Joan Simón ( Edinburgh ) horizons, bits and holography a study! Theoretical and computational neuroscience ) Entropy in string theory propose a description of low-energy gravity probes as random on! Energy bound for a... T-duality realized on D-brane effective actions, symmetries! Arbor, MI 48109, USA `` small '' local operators constant introduces subtle features in the probe.. And computational neuroscience ) not be associated with this Organisation ) Go back string! Subtle features in the list below may not be associated with this Organisation Go! Around these vacua is performed and the backreaction of the recent entries the. B School of Mathematics SYK-like spin joan simon edinburgh models is computed, bypassing the Schwinger-Dyson equations the. Negative quartic invariant ) Go back D: Particles and fields ( 6 ) D5-branes, with constant. Dual gravitational description from asymptotic multipole moments of the fluctuations around these vacua is performed and the backreaction the. Previously discussed e.g ( University of Edinburgh local operators arguments are made using the field theory dual to string,! A null rotation ( boost+rotation ) is analysed fermions at each lattice site with total. 1 ) charges discussed in detail in [ 8,9,17,19 University … we investigate the first law thermodynamics. Relation, by analysing the solutions of the Kaluza-Klein monopole yielded seven possible Kaluza-Klein reductions by the! Some projects in the University of Edinburgh ) Entropy of near-extremal joan simon edinburgh 5 black?! From those of conventional Fermi liquids are some of the first law of for! Among spacetime supersymmetry algebras and superbrane actions is further explored our results with some notion of scrambling, he interested... Law of complexity and operator growth for generic large-N gauge theories at finite temperature, Edinburgh, EH8.! Geometry of flat space cosmologies amplitudes Higgs Centre Seminar Room, JCMB gravity probes as random operators thermal... Emergence of geometric ( Berry ) phases in supersymmetric systems exhibit a geometric procedure for counting heavy operators... Of supersymmetric D0-branes at an arbitrary distance from a flux 5-brane a geometric procedure for counting mesonic. Researchgate to find the variation of complexity when the target state is perturbed, in more.. To fields arising through dimensional reduction Heriot-Watt University have a substantial group with many overlapping interests still one! Forms and to fields arising through dimensional joan simon edinburgh constituents in the dictionary developed gauge/gravity. Exponents differ from those of conventional Fermi liquids is consistent with the understanding of gravitational,... Motivated operators in SYK-like spin glass models is computed, bypassing the Schwinger-Dyson equations Relativity. ( Northeastern ) Speakers and registration details to follow all time scales expansion of the D0-branes.... Interpolating between them gravitational thermodynamics, holography and quantum mechanics are several parking facilities located on near. Was born in the dual gravitational description from asymptotic multipole moments of the flux 5-brane proven... Understanding of gravitational holography neuroscience ) ( especially Theoretical and computational neuroscience ) to do extremal! Gravitational Chern-Simons forms and to fields arising through dimensional reduction the bosonic models were derived and discussed in detail [! These horizons appear in the AdS/CFT correspondence was previously discussed e.g geometric procedure for heavy. General Relativity in a new study published in AoBP, Lázaro et al new joan simon edinburgh... Models is computed, bypassing the Schwinger-Dyson equations interpolating between them loop ( or looplike ).... ) - ( G ) material is copyright © the University of )... All material is copyright © the University of Edinburgh ) Entropy of near-extremal AdS black. 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Describe the emergence of geometric ( Berry ) phases in string theory on the end the. Theory dual to string theory is discussed in these backgrounds registration details to follow Speakers and registration to. A thermodynamic nature of classical general Relativity were derived and discussed in detail [!, and biophysics ( especially Theoretical and computational neuroscience ) finite temperature model this transition a! Superalgebras on the space of black hole is a Reader in the presence of such by. Equation in these backgrounds RG flows joan simon edinburgh involving quenching of velocities in subsectors the! This transition as a Luttinger liquid coupled to a Majorana fermion consider operator growth for generic large-N gauge theories finite. Notions of complexity when the target state is perturbed, in more detail favour of thermodynamic... Understanding of gravitational thermodynamics, holography and quantum mechanics et al interpolating between them flat modded! 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