1.5k citations · 17.9k across the 190 of their papers we have counts for
39 papers · 1 filter
Machian fractons, Hamiltonian attractors and non-equilibrium steady states
Abhishodh Prakash, Ylias Sadki, S. L. Sondhi
We study the fracton problem in classical mechanics, with fractons defined as point particles that conserve multipole moments up to a given order. We find that the nonlinear Ma…
50 years of quantum spin liquids
Steven A. Kivelson, Shivaji Sondhi
In 1973, Philip Anderson published a paper introducing the resonating valence bond state, which can be recognized in retrospect as a topologically ordered phase of matter - one tha…
Dynamics and transport in the boundary-driven dissipative Klein-Gordon chain
Abhinav Prem, Vir B. Bulchandani, S. L. Sondhi
Motivated by experiments on chains of superconducting qubits, we consider the dynamics of a classical Klein-Gordon chain coupled to coherent driving and subject to dissipation sole…
Arresting dynamics in hardcore spin models
Benedikt Placke, Grace M. Sommers, S. L. Sondhi +1
We study the dynamics of hardcore spin models on the square and triangular lattice, constructed by analogy to hard spheres, where the translational degrees of freedom of the sphere…
Recursive contact tracing in Reed-Frost epidemic models
Saumya Shivam, Vir B. Bulchandani, S. L. Sondhi
We introduce a Reed-Frost epidemic model with recursive contact tracing and asymptomatic transmission. This generalizes the branching-process model introduced by the authors in a p…
From hard spheres to hard-core spins
Grace M. Sommers, Benedikt Placke, Roderich Moessner +1
A system of hard spheres exhibits physics that is controlled only by their density. This comes about because the interaction energy is either infinite or zero, so all allowed confi…
Distinct Critical Behaviors from the Same State in Quantum Spin and Population Dynamics Perspectives
C. L. Baldwin, S. Shivam, S. L. Sondhi +1
There is a deep connection between the ground states of transverse-field spin systems and the late-time distributions of evolving viral populations -- within simple models, both ar…
Digital Herd Immunity and COVID-19
Vir B. Bulchandani, Saumya Shivam, Sanjay Moudgalya +1
A population can be immune to epidemics even if not all of its individual members are immune to the disease, so long as sufficiently many are immune - this is the traditional notio…
Studying viral populations with tools from quantum spin chains
Saumya Shivam, Christopher L. Baldwin, John Barton +2
We study Eigen's model of quasi-species, characterized by sequences that replicate with a specified fitness and mutate independently at single sites. The evolution of the populatio…
An Extension of ETH to Non-Equilibrium Steady States
Sanjay Moudgalya, Trithep Devakul, D. P. Arovas +1
We extend the notion of the Eigenstate Thermalization Hypothesis (ETH) to Open Quantum Systems governed by the Gorini-Kossakowski-Lindblad-Sudarshan (GKLS) Master Equation. We pres…
Cooling arbitrary near-critical systems using hyperbolic quenches
Prahar Mitra, Matteo Ippoliti, R. N. Bhatt +2
We describe a quench protocol that allows the rapid preparation of ground states of arbitrary interacting conformal field theories in dimensions. We start from the ground sta…
Operator Spreading in Quantum Maps
Sanjay Moudgalya, Trithep Devakul, C. W. von Keyserlingk +1
Operators in ergodic spin-chains are found to grow according to hydrodynamical equations of motion. The study of such operator spreading has aided our understanding of many-body qu…
Obtaining highly excited eigenstates of the localized XX chain via DMRG-X
Trithep Devakul, Vedika Khemani, Frank Pollmann +2
We benchmark a variant of the recently introduced DMRG-X algorithm against exact results for the localized random field XX chain. We find that the eigenstates obtained via DMRG-X e…
Defining Time Crystals via Representation Theory
Vedika Khemani, C. W. von Keyserlingk, S. L. Sondhi
Time crystals are proposed states of matter which spontaneously break time translation symmetry. There is no settled definition of such states. We offer a new definition which foll…
Interaction stabilized steady states in the driven O(N) model
Anushya Chandran, Shivaji. L. Sondhi
We study periodically driven bosonic scalar field theories in the infinite N limit. It is well-known that the free theory can undergo parametric resonance under monochromatic modul…
Analytical theory for proton correlations in common water ice
S. V. Isakov, R. Moessner, S. L. Sondhi +1
We provide a fully analytical microscopic theory for the proton correlations in water ice . We compute the full diffuse elastic neutron scattering structure factor, which we f…
Eigenstate Thermalization and Representative States on Subsystems
Vedika Khemani, Anushya Chandran, Hyungwon Kim +1
We consider a quantum system A U B made up of degrees of freedom that can be partitioned into spatially disjoint regions A and B. When the full system is in a pure state in which r…
Rare region effects dominate weakly disordered 3D Dirac points
Rahul Nandkishore, David A. Huse, S. L. Sondhi
We study three-dimensional Dirac fermions with weak finite-range scalar potential disorder. In the clean system, the density of states vanishes quadratically at the Dirac point. Di…
On equilibration and coarsening in the quantum O(N) model at infinite
Anushya Chandran, Arun Nanduri, S. S. Gubser +1
The quantum O(N) model in the infinite limit is a paradigm for symmetry-breaking. Qualitatively, its phase diagram is an excellent guide to the equilibrium physics for more rea…
Localization protected quantum order
David A. Huse, Rahul Nandkishore, Vadim Oganesyan +2
Closed quantum systems with quenched randomness exhibit many-body localized regimes wherein they do not equilibrate even though prepared with macroscopic amounts of energy above th…
A Bionic Coulomb Phase on the Pyrochlore Lattice
V. Khemani, R. Moessner, S. A. Parameswaran +1
A class of three dimensional classical lattice systems with macroscopic ground state degeneracies, most famously the spin ice system, are known to exhibit "Coulomb" phases wherein…
The Kibble-Zurek Problem: Universality and the Scaling Limit
Anushya Chandran, Amir Erez, Steven S. Gubser +1
Near a critical point, the equilibrium relaxation time of a system diverges and any change of control/thermodynamic parameters leads to non-equilibrium behavior. The Kibble-Zurek p…
Statistical mechanics of classical and quantum computational complexity
C. R. Laumann, R. Moessner, A. Scardicchio +1
The quest for quantum computers is motivated by their potential for solving problems that defy existing, classical, computers. The theory of computational complexity, one of the cr…
There are no Goldstone bosons on the Bethe lattice
C. R. Laumann, S. A. Parameswaran, S. L. Sondhi
We discuss symmetry breaking quantum phase transitions on the oft studied Bethe lattice in the context of the ferromagnetic scalar spherical model or, equivalently, the infinite $N…