410 citations · 2.3k across the 32 of their papers we have counts for
33 papers · 1 filter
Energy Transmission Across Holographic Conformal Interfaces in General Dimensions
Igal Arav, Theodore Bertrand, Shira Chapman +2
Energy transport across conformal interfaces is universal in two spacetime dimensions, but its higher-dimensional counterpart has remained largely unexplored. In higher dimensions,…
Entanglement transitions in holographic conformal interfaces
Evangelos Afxonidis, Rotem Berman, Ignacio Carreño Bolla +3
We study entanglement transitions for pairs of disjoint intervals in two-dimensional holographic interface conformal field theories. We consider several holographic models with equ…
CFT Complexity and Penalty Factors
Stefano Baiguera, Nicolas Chagnet, Shira Chapman +1
Quantum complexity of conformal field theory (CFT) states has recently gained significant attention, both as a diagnostic tool in condensed matter systems and in connection with ho…
Quantum complexity in gravity, quantum field theory, and quantum information science
Stefano Baiguera, Vijay Balasubramanian, Pawel Caputa +4
Quantum complexity quantifies the difficulty of preparing a state or implementing a unitary transformation with limited resources. Applications range from quantum computation to co…
Entanglement spectra from holography
Stefano Baiguera, Shira Chapman, Christian Northe +2
The entanglement spectrum of a bipartite quantum system is given by the distribution of eigenvalues of the modular Hamiltonian. In this work, we compute the entanglement spectrum i…
Krylov complexity and chaos in deformed SYK models
Shira Chapman, Saskia Demulder, Damián A. Galante +2
Krylov complexity has recently been proposed as a quantum probe of chaos. The Krylov exponent characterising the exponential growth of Krylov complexity is conjectured to upper-bou…
The Complexity of Being Entangled
Stefano Baiguera, Shira Chapman, Giuseppe Policastro +1
Nielsen's approach to quantum state complexity relates the minimal number of quantum gates required to prepare a state to the length of geodesics computed with a certain norm on th…
The Cosmological Switchback Effect
Stefano Baiguera, Rotem Berman, Shira Chapman +1
The volume behind the black hole horizon was suggested as a holographic dual for the quantum computational complexity of the boundary state in AdS/CFT. This identification is stron…
Energy Transport for Thick Holographic Branes
Constantin Bachas, Stefano Baiguera, Shira Chapman +2
Universal properties of two-dimensional conformal interfaces are encoded by the flux of energy transmitted and reflected during a scattering process. We develop an innovative metho…
Complex geodesics in de Sitter space
Shira Chapman, Damián A. Galante, Eleanor Harris +2
The two-point function of a free massive scalar field on a fixed background can be evaluated in the large mass limit by using a semiclassical geodesic approximation. In de Sitter s…
Shape Deformations of Charged Rényi Entropies from Holography
Stefano Baiguera, Lorenzo Bianchi, Shira Chapman +1
Charged and symmetry-resolved Rényi entropies are entanglement measures quantifying the degree of entanglement within different charge sectors of a theory with a conserved global c…
Quantum Computational Complexity -- From Quantum Information to Black Holes and Back
Shira Chapman, Giuseppe Policastro
Quantum computational complexity estimates the difficulty of constructing quantum states from elementary operations, a problem of prime importance for quantum computation. Surprisi…
Holographic Complexity and de Sitter Space
Shira Chapman, Damián A. Galante, Eric David Kramer
We compute the length of spacelike geodesics anchored at opposite sides of certain double-sided flow geometries in two dimensions. These geometries are asymptotically anti-de Sitte…
Complexity for Conformal Field Theories in General Dimensions
Nicolas Chagnet, Shira Chapman, Jan de Boer +1
We study circuit complexity for conformal field theory states in arbitrary dimensions. Our circuits start from a primary state and move along a unitary representation of the Lorent…
Renormalization of Galilean Electrodynamics
Shira Chapman, Lorenzo Di Pietro, Kevin T. Grosvenor +1
We study the quantum properties of a Galilean-invariant abelian gauge theory coupled to a Schrödinger scalar in 2+1 dimensions. At the classical level, the theory with minimal coup…
Energy Reflection and Transmission at 2D Holographic Interfaces
Constantin Bachas, Shira Chapman, Dongsheng Ge +1
Scattering from conformal interfaces in two dimensions is universal in that the flux of reflected and transmitted energy does not depend on the details of the initial state. In thi…
Charged Complexity and the Thermofield Double State
Shira Chapman, Hong Zhe Chen
We establish a systematic framework for studying quantum computational complexity of Gaussian states of charged systems based on Nielsen's geometric approach. We use this framework…
Complexity of Mixed States in QFT and Holography
Elena Caceres, Shira Chapman, Josiah D. Couch +3
We study the complexity of Gaussian mixed states in a free scalar field theory using the 'purification complexity'. The latter is defined as the lowest value of the circuit complex…
Holographic Complexity for Defects Distinguishes Action from Volume
Shira Chapman, Dongsheng Ge, Giuseppe Policastro
We explore the two holographic complexity proposals for the case of a 2d boundary CFT with a conformal defect. We focus on a Randall-Sundrum type model of a thin AdS brane embe…
Complexity and entanglement for thermofield double states
Shira Chapman, Jens Eisert, Lucas Hackl +4
Motivated by holographic complexity proposals as novel probes of black hole spacetimes, we explore circuit complexity for thermofield double (TFD) states in free scalar quantum fie…
Holographic Complexity in Vaidya Spacetimes II
Shira Chapman, Hugo Marrochio, Robert C. Myers
In this second part of the study initiated in arxiv:1804.07410, we investigate holographic complexity for eternal black hole backgrounds perturbed by shock waves, with both the com…
Holographic Complexity in Vaidya Spacetimes I
Shira Chapman, Hugo Marrochio, Robert C. Myers
We examine holographic complexity in time-dependent Vaidya spacetimes with both the complexityvolume (CV) and complexityaction (CA) proposals. We focus on the evolution of th…
On the Time Dependence of Holographic Complexity
Dean Carmi, Shira Chapman, Hugo Marrochio +2
We evaluate the full time dependence of holographic complexity in various eternal black hole backgrounds using both the complexity=action (CA) and the complexity=volume (CV) conjec…
Towards Complexity for Quantum Field Theory States
Shira Chapman, Michal P. Heller, Hugo Marrochio +1
We investigate notions of complexity of states in continuous quantum-many body systems. We focus on Gaussian states which include ground states of free quantum field theories and t…