861 citations · 8.4k across the 131 of their papers we have counts for
41 papers · 1 filter
Thermalization at Low Temperatures via Weakly-Damped Multi-Site Baths
Cristian Zanoci, Yongchan Yoo, Brian Swingle
We study the thermalization properties of one-dimensional open quantum systems coupled to baths at their boundary. The baths are driven to their thermal states via Lindblad operato…
Open-system spin transport and operator weight dissipation in spin chains
Yongchan Yoo, Christopher David White, Brian Swingle
We use non-equilibrium steady states to study the effect of dissipation-assisted operator evolution (DAOE) on the scaling behavior of transport in one-dimensional spin chains. We c…
Near-Equilibrium Approach to Transport in Complex Sachdev-Ye-Kitaev Models
Cristian Zanoci, Brian Swingle
We study the non-equilibrium dynamics of a one-dimensional complex Sachdev-Ye-Kitaev chain by directly solving for the steady state Green's functions in terms of small perturbation…
Energy Transport in Sachdev-Ye-Kitaev Networks Coupled to Thermal Baths
Cristian Zanoci, Brian Swingle
We develop a general framework for studying the equilibrium and non-equilibrium properties of arbitrary networks of Sachdev-Ye-Kitaev clusters coupled to thermal baths. We proceed…
Temperature Dependent Energy Diffusion in Chaotic Spin Chains
Cristian Zanoci, Brian Swingle
We study the temperature dependence of energy diffusion in two chaotic gapped quantum spin chains, a tilted-field Ising model and an XZ model, using an open system approach. We int…
A Sparse Model of Quantum Holography
Shenglong Xu, Leonard Susskind, Yuan Su +1
We study a sparse version of the Sachdev-Ye-Kitaev (SYK) model defined on random hypergraphs constructed either by a random pruning procedure or by randomly sampling regular hyperg…
Non-equilibrium steady state phases of the interacting Aubry-Andre-Harper model
Yongchan Yoo, Junhyun Lee, Brian Swingle
Here we study the phase diagram of the Aubry-Andre-Harper model in the presence of strong interactions as the strength of the quasiperiodic potential is varied. Previous work has e…
Universal Prethermal Dynamics in Gross-Neveu-Yukawa Criticality
Shao-Kai Jian, Shuai Yin, Brian Swingle
We study the prethermal dynamics of the Gross-Neveu-Yukawa quantum field theory, suddenly quenched in the vicinity of a quantum critical point. We find that the universal pretherma…
Butterfly effect in interacting Aubry-Andre model: thermalization, slow scrambling, and many-body localization
Shenglong Xu, Xiao Li, Yi-Ting Hsu +2
The many-body localization transition in quasiperiodic systems has been extensively studied in recent ultracold atom experiments. At intermediate quasiperiodic potential strength,…
Thermalization and chaos in QED
Julia Steinberg, Brian Swingle
We study the real time dynamics of flavors of fermions coupled to a gauge field in dimensions to leading order in a expansion. For large enough ,…
Product Spectrum Ansatz and the Simplicity of Thermal States
John Martyn, Brian Swingle
Calculating the physical properties of quantum thermal states is a difficult problem for classical computers, rendering it intractable for most quantum many-body systems. A quantum…
Scrambling dynamics across a thermalization-localization quantum phase transition
Subhayan Sahu, Shenglong Xu, Brian Swingle
We study quantum information scrambling, specifically the growth of Heisenberg operators, in large disordered spin chains using matrix product operator dynamics to scan across the…
Locality, Quantum Fluctuations, and Scrambling
Shenglong Xu, Brian Swingle
Thermalization of chaotic quantum many-body systems under unitary time evolution is related to the growth in complexity of initially simple Heisenberg operators. Operator growth is…
Quantum butterfly effect in weakly interacting diffusive metals
Aavishkar A. Patel, Debanjan Chowdhury, Subir Sachdev +1
We study scrambling, an avatar of chaos, in a weakly interacting metal in the presence of random potential disorder. It is well known that charge and heat spread via diffusion in s…
Onset of many-body chaos in the model
Debanjan Chowdhury, Brian Swingle
The growth of commutators of initially commuting local operators diagnoses the onset of chaos in quantum many-body systems. We compute such commutators of local field operators wit…
Entanglement structure of non-equilibrium steady states
Raghu Mahajan, C. Daniel Freeman, Sam Mumford +2
We study the problem of calculating transport properties of interacting quantum systems, specifically electrical and thermal conductivities, by computing the non-equilibrium steady…
Slow scrambling in disordered quantum systems
Brian Swingle, Debanjan Chowdhury
Recent work has studied the growth of commutators as a probe of chaos and information scrambling in quantum many-body systems. In this work we study the effect of static disorder o…
Mixed s-sourcery: Building many-body states using bubbles of Nothing
Brian Swingle, John McGreevy
In arXiv:1407.8203, we introduced the idea of s-sourcery, a general formalism for building many-body quantum ground states using renormalization-group-inspired quantum circuits. He…
Renormalization Group Circuits for Gapless States
Brian Swingle, John McGreevy, Shenglong Xu
We show that a large class of gapless states are renormalization group fixed points in the sense that they can be grown scale by scale using local unitaries. This class of examples…
Area Law for Gapless States from Local Entanglement Thermodynamics
Brian Swingle, John McGreevy
We demonstrate an area law bound on the ground state entanglement entropy of a wide class of gapless quantum states of matter using a strategy called local entanglement thermodynam…
Renormalization group constructions of topological quantum liquids and beyond
Brian Swingle, John McGreevy
We give a detailed physical argument for the area law for entanglement entropy in gapped phases of matter arising from local Hamiltonians. Our approach is based on renormalization…
Singularity of the London penetration depth at quantum critical points in superconductors
Debanjan Chowdhury, Brian Swingle, Erez Berg +1
We present a general theory of the singularity in the London penetration depth at symmetry-breaking and topological quantum critical points within a superconducting phase. While th…
A signature of quantum spin liquids in superconductors with topological order
Debanjan Chowdhury, Brian Swingle, Subir Sachdev
This paper has been withdrawn and superseded by a new version entitled "Singularity of the London penetration depth at quantum critical points in superconductors" by Debanjan Chowd…
Oscillating terms in the Renyi entropy of Fermi liquids
Brian Swingle, Jeremy McMinis, Norm M. Tubman
In this work we compute subleading oscillating terms in the Renyi entropy of Fermi gases and Fermi liquids corresponding to -like oscillations. Our theoretical tools are the…