77 citations · 392 across the 22 of their papers we have counts for
22 papers
Quantum Fisher information in a quenched superfluid
Stelio Varrone, Yunxiang Liao
The quantum Fisher information (QFI) is widely used to characterize quantum phases and transitions, but its diagnostic power sometimes relies on selecting special generators based…
Long-range Nonlinear Sigma Model for a Singular Quantum Kicked Rotor
Weitao Chen, Yunxiang Liao
Singular kicked rotors have long been compared with power-law random banded matrices (PRBM) because their momentum-space Floquet matrix elements decay algebraically. However, it ha…
Measurement-induced phase transitions in disordered fermions
Yunxiang Liao, Max Matheussen, Xinghai Zhang
Measurement-induced phase transitions are nonequilibrium transitions between phases characterized by distinct entanglement scaling behaviors, driven by the competition between unit…
Slow Relaxation in a Glassy Quantum Circuit
Richard D. Barney, Yunxiang Liao, Victor Galitski
Quantum circuits have become a powerful tool in the study of many-body quantum physics, providing insights into both fast-thermalizing chaotic and non-thermalizing integrable many-…
Detecting Topological Superconductivity via Berry Curvature Effects in Spectral Functions
Yunxiang Liao, Yi-Ting Hsu
Experimental efforts on topological superconductivity (TSC) have primarily focused on the detection of Majorana boundary modes, while the bulk properties of TSC - particularly in t…
Field theory approach to eigenstate thermalization in random quantum circuits
Yunxiang Liao, Victor Galitski
We use field-theoretic methods to explore the statistics of eigenfunctions of the Floquet operator for a large family of Floquet random quantum circuits. The correlation function o…
Quantum Interference of Hydrodynamic Modes in a Dirty Marginal Fermi Liquid
Tsz Chun Wu, Yunxiang Liao, Matthew S. Foster
We study the electrical transport of a two-dimensional non-Fermi liquid with disorder, and we determine the first quantum correction to the semiclassical dc conductivity due to qua…
Effective field theory of random quantum circuits
Yunxiang Liao, Victor Galitski
Quantum circuits have been widely used as a platform to simulate generic quantum many-body systems. In particular, random quantum circuits provide a means to probe universal featur…
Universal Dephasing Mechanism of Many-Body Quantum Chaos
Yunxiang Liao, Victor Galitski
Ergodicity is a fundamental principle of statistical mechanics underlying the behavior of generic quantum many-body systems. However, how this universal many-body quantum chaotic r…
Emergence of many-body quantum chaos via spontaneous breaking of unitarity
Yunxiang Liao, Victor Galitski
It is suggested that many-body quantum chaos appears as the spontaneous symmetry breaking of unitarity in interacting quantum many-body systems. It has been shown that many-body le…
Know the enemy: 2D Fermi liquids
Sankar Das Sarma, Yunxiang Liao
We describe an analytical theory investigating the regime of validity of the Fermi liquid theory in interacting, via the long-range Coulomb coupling, two-dimensional Fermi systems…
Many-body level statistics of single-particle quantum chaos
Yunxiang Liao, Amit Vikram, Victor Galitski
We consider a non-interacting many-fermion system populating levels of a unitary random matrix ensemble (equivalent to the q=2 complex Sachdev-Ye-Kitaev model) - a generic model of…
The two-dimensional electron self-energy: Long-range Coulomb interaction
Yunxiang Liao, Donovan Buterakos, Mike Schecter +1
The electron self-energy for long-range Coulomb interactions plays a crucial role in understanding the many-body physics of interacting electron systems (e.g. in metals and semicon…
Drag viscosity of metals and its connection to Coulomb drag
Yunxiang Liao, Victor Galitski
Recent years have seen a surge of interest in studies of hydrodynamic transport in electronic systems. We investigate the electron viscosity of metals and find a new component that…
Many-Body Localization Landscape
Shankar Balasubramanian, Yunxiang Liao, Victor Galitski
We generalize the notion of "localization landscape," introduced by M. Filoche and S. Mayboroda [Proc. Natl. Acad. Sci. USA 109, 14761 (2012)] for the single-particle Schrodinger o…
Critical Viscosity of a Fluctuating Superconductor
Yunxiang Liao, Victor Galitski
We consider a fluctuating superconductor in the vicinity of the transition temperature, . The fluctuation shear viscosity is calculated. In two dimensions, the leading correct…
Nonlinear sigma model approach to many-body quantum chaos: Regularized and unregularized out-of-time-ordered correlators
Yunxiang Liao, Victor Galitski
The out-of-time-ordered correlators (OTOCs) have been proposed and widely used recently as a tool to define and describe many-body quantum chaos. Here, we develop the Keldysh non-l…
Critical Percolation Without Fine Tuning on the Surface of a Topological Superconductor
Sayed Ali Akbar Ghorashi, Yunxiang Liao, Matthew S. Foster
We present numerical evidence that most two-dimensional surface states of a bulk topological superconductor (TSC) sit at an integer quantum Hall plateau transition. We study TSC su…
Dephasing catastrophe in dimensions: A possible instability of the ergodic (many-body-delocalized) phase
Yunxiang Liao, Matthew S. Foster
In two dimensions (2D), dephasing by a bath cuts off Anderson localization that would otherwise occur at any energy density for fermions with disorder. For an isolated system with…
Response theory of the ergodic many-body delocalized phase: Keldysh Finkel'stein sigma models and the 10-fold way
Yunxiang Liao, Alex Levchenko, Matthew S. Foster
We derive the finite temperature Keldysh response theory for interacting fermions in the presence of quenched disorder, as applicable to any of the 10 Altland-Zirnbauer classes in…
Twisting Anderson pseudospins with light: Quench dynamics in THz-pumped BCS superconductors
Yang-Zhi Chou, Yunxiang Liao, Matthew S. Foster
We study the preparation (pump) and the detection (probe) of far-from-equilibrium BCS superconductor dynamics in THz pump-probe experiments. In a recent experiment [R. Matsunaga, Y…
Spectroscopic probes of isolated nonequilibrium quantum matter: Quantum quenches, Floquet states, and distribution functions
Yunxiang Liao, Matthew S. Foster
We investigate radio-frequency (rf) spectroscopy, metal-to-superconductor tunneling, and ARPES as probes of isolated out-of-equilibrium quantum systems, and examine the crucial rol…