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1141
Geometry and entanglement in AdS/CFT and beyond
Published 2022“…A semiclassical analysis on geometries has shed insights on the non-perturbative aspects of quantum field theories, some of which does not seem to require an asymptotic anti-de Sitter boundary. …”
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Thesis -
1142
Intersecting surface defects and two-dimensional CFT
Published 2017“…We initiate the study of intersecting surface operators/defects in 4D quantum field theories (QFTs). We characterize these defects by coupled 4D/2D/0D theories constructed by coupling the degrees of freedom localized at a point and on intersecting surfaces in spacetime to each other and to the 4D QFT. …”
Journal article -
1143
Spectral networks, abelianization, and opers
Published 2017“…<p>In this thesis we study a number of geometric structures arising in the study of four-dimensional supersymmetric quantum field theories. </p> <p>We study properties and applications of so-called “spectral networks” on Riemann surfaces C, focusing in particular on the “abelianization map” which we use to produce special coordinate systems on moduli spaces of local systems on C. …”
Thesis -
1144
Stabilizing complex Langevin for real-time gauge theories with an anisotropic kernel
Published 2023-06-01“…Abstract The complex Langevin (CL) method is a promising approach to overcome the sign problem that occurs in real-time formulations of quantum field theories. Using the Schwinger-Keldysh formalism, we study SU(N c ) gauge theories with CL. …”
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1145
5d to 3d compactifications and discrete anomalies
Published 2023-10-01“…Abstract Much insight into the dynamics of quantum field theories can be gained by studying the relationship between field theories in different dimensions. …”
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Article -
1146
Loop corrections in Minkowski spacetime away from equilibrium. Part I. Late-time resummations
Published 2023-02-01“…In this paper, we calculate the late-time limit of the two-point correlator for different massless self-interacting scalar quantum field theories on a Minkowski background. We first use a late-time version of the in-in path integral starting in the vacuum of the free theory; in this limit, the calculation, including UV renormalization, reduces to that in in-out. …”
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1147
Shape dependence of mutual information in the OPE limit: linear responses
Published 2022-10-01“…In the framework of quantum field theories (QFTs) they have better regulated UV behavior than entanglement entropy, and thus provide more direct access to universal aspects of entanglement structures. …”
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1148
Connectomes and properties of quantum entanglement
Published 2023-07-01“…Abstract Topological quantum field theories (TQFT) encode properties of quantum states in the topological features of abstract manifolds. …”
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1149
Positivity, low twist dominance and CSDR for CFTs
Published 2023-04-01“…This representation has several features in common with the CSDR for quantum field theories. It enables a study of the expansion of the correlation function around $u=v=1/4$, which is used in the numerical conformal bootstrap program. …”
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1150
Chaos and Thermalization in Quantum Many-Body Systems and Gravity
Published 2023“…This technique allows us to calculate correlation measures such as entanglement entropy or logarithmic negativity, as well as measures of information recovery from subsystems, in chaotic systems ranging from spin chains and quantum field theories to black holes. For evaporating black holes, the equilibrium approximation for entanglement entropy provides a systematic derivation of certain recent prescriptions for addressing Hawking’s information loss paradox, and explains their physical origin. …”
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Thesis -
1151
From 6D superconformal field theories to dynamic gauged linear sigma models
Published 2017“…Compactifications of six-dimensional (6D) superconformal field theories (SCFTs) on four- manifolds generate a large class of novel two-dimensional (2D) quantum field theories. We consider in detail the case of the rank-one simple non-Higgsable cluster 6D SCFTs. …”
Journal article -
1152
Dynamical consequences of 1-form symmetries and the exceptional Argyres-Douglas theories
Published 2022-06-01“…Abstract Higher-form symmetries have proved useful in constraining the dynamics of a number of quantum field theories. In the context of the Argyres-Douglas (AD) theories of the (G, G′) type, we find that the 1-form symmetries are invariant under the Higgs branch flow, and that they are captured by the non-Higgsable sector at a generic point on the Higgs branch of the AD theory in question. …”
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Article -
1153
Strongly correlated quantum fluids: ultracold quantum gases, quantum chromodynamic plasmas and holographic duality
Published 2012-01-01“…In particular, both fluids exhibit a robustly low shear viscosity to entropy density ratio, which is characteristic of quantum fluids described by holographic duality, a mapping from strongly correlated quantum field theories to weakly curved higher dimensional classical gravity. …”
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1154
Co-Homology of Differential Forms and Feynman Diagrams
Published 2021-09-01“…Feynman integrals enter in several perturbative methods for solving non-linear PDE, starting from Quantum Field Theories and including General Relativity and Condensed Matter Physics. …”
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1155
Random matrix theory for complexity growth and black hole interiors
Published 2022“…This is a refined, “microcanonical” version of K-complexity that applies to theories with infinite or continuous spectra (including quantum field theories), and in the holographic theories we study exhibits exponential growth for a scrambling time, followed by linear growth until saturation at a time exponential in the entropy — a behavior that is characteristic of chaos. …”
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Article -
1156
Strongly correlated quantum fluids: ultracold quantum gases, quantum chromodynamic plasmas and holographic duality
Published 2013“…In particular, both fluids exhibit a robustly low shear viscosity to entropy density ratio, which is characteristic of quantum fluids described by holographic duality, a mapping from strongly correlated quantum field theories to weakly curved higher dimensional classical gravity. …”
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1157
Noether Symmetries and Covariant Conservation Laws in Classical, Relativistic and Quantum Physics
Published 2010-04-01“…A few substantially new and very recent applications/examples are presented to better show the power of the methods introduced: one in Classical Mechanics (definition of strong conservation laws in a frame-independent setting and a discussion on the way in which conserved quantities depend on the choice of an observer); one in Classical Field Theories (energy and entropy in General Relativity, in its standard formulation, in its spin-frame formulation, in its first order formulation “à la Palatini” and in its extensions to Non-Linear Gravity Theories); one in Quantum Field Theories (applications to conservation laws in Loop Quantum Gravity via spin connections and Barbero–Immirzi connections).…”
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1158
A spectral metric for collider geometry
Published 2023-08-01“…Finally, we speculate on whether the spectral approach could furnish a useful metric on the space of quantum field theories.…”
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Article -
1159
’t Hooft anomalies and the holomorphy of supersymmetric partition functions
Published 2019-08-01“…Abstract We study the dependence of supersymmetric partition functions on continuous parameters for the flavor symmetry group, G F , for 2d N $$ \mathcal{N} $$ = (0, 2) and 4d N $$ \mathcal{N} $$ = 1 supersymmetric quantum field theories. In any diffeomorphism-invariant scheme and in the presence of G F ’t Hooft anomalies, the supersymmetric Ward identities imply that the partition function has a non-holomorphic dependence on the flavor parameters. …”
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Article -
1160
Theory of oblique topological insulators
Published 2023-02-01“…Based on the lattice gauge theory, we present continuum topological quantum field theories (TQFTs) for oblique TI phases involving fluctuating one-form and two-form gauge fields. …”
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