17 citations · 66 across the 14 of their papers we have counts for
14 papers
Tunable Molecular Interactions Near an Atomic Feshbach Resonance: Stability and Collapse of a Molecular Bose-Einstein Condensate
Zhiqiang Wang, Ke Wang, Zhendong Zhang +3
Understanding and controlling interactions of ultracold molecules is a cornerstone of quantum chemistry. While the laboratory creation of degenerate molecular gases comprised of bo…
Universal approach to light driven "superconductivity" via preformed pairs
Ke Wang, Zhiqiang Wang, Qijin Chen +1
While there are many different mechanisms which have been proposed to understand the physics behind light induced ``superconductivity", what seems to be common to the class of mate…
The Higgs-Amplitude mode in the optical conductivity in the presence of a supercurrent: Gauge-invariant formulation with disorder
Ke Wang, Rufus Boyack, K. Levin
Observing the ``Higgs" or amplitude mode in superconductors has been a central challenge in condensed matter physics. Moreover, arriving at a theoretical understanding of this mode…
Universal coherent atom-molecule oscillations in the dynamics of the unitary Bose gas near a narrow Feshbach resonance
Ke Wang, Zhendong Zhang, Shu Nagata +2
Quench experiments on a unitary Bose gas around a broad Feshbach resonance have led to the discovery of universal dynamics. This universality is manifested in the measured atomic m…
Droplets of Bosons at a Narrow Resonance
Ke Wang, Thimo Preis, Dam Thanh Son
We consider bosons interacting through a narrow -wave resonance. Such a resonance is characterized by an infinite scattering length and a large and negative effective range $r_0…
Universal non-Hermitian flow in one-dimensional PT-symmetric quantum criticalities
Xin-Chi Zhou, Ke Wang
The critical point of a topological phase transition is described by a conformal field theory (CFT), where the finite-size corrections to the ground state energy are uniquely relat…
Stability and Dynamics of Atom-Molecule Superfluids Near a Narrow Feshbach Resonance
Zhiqiang Wang, Ke Wang, Zhendong Zhang +3
The recent observations of a stable molecular condensate emerging from a condensate of bosonic atoms and related "super-chemical" dynamics have raised an intriguing set of question…
Simulating Cosmological Evolution by Quantum Quench of an Atomic BEC
Ke Wang, Han Fu, K. Levin
In cosmological evolution, it is the homogeneous scalar field (inflaton) that drives the universe to expand isotropically and to generate standard model particles. However, to simu…
Quantum Lifshitz criticality in one-dimensional interacting fermions
Ke Wang
We consider Lifshitz criticality (LC) with the dynamical critical exponent in one-dimensional interacting fermions with a filled Dirac Sea. We report that interactions have c…
Universal finite-size amplitude and anomalous entanglement entropy of quantum Lifshitz criticalities in topological chains
Ke Wang, T. A. Sedrakyan
We consider Lifshitz criticalities with dynamical exponent that emerge in a class of topological chains. There, such a criticality plays a fundamental role in describing tran…
Ballistic magnetotransport in graphene
Ke Wang, T. A. Sedrakyan
We report that a perpendicular magnetic field introduces an anomalous interaction correction, , to the static conductivity of doped graphene in the ballistic regime. The correc…
Interaction effects in graphene in a weak magnetic field
Ke Wang, M. E. Raikh, T. A. Sedrakyan
A weak perpendicular magnetic field, , breaks the chiral symmetry of each valley in the electron spectrum of graphene, preserving the overall chiral symmetry in the Brillouin zo…
Theory for the negative longitudinal magnetoresistance in the quantum limit of Kramers Weyl semimetals
Bo Wan, Frank Schindler, Ke Wang +4
Negative magnetoresistance is rare in non-magnetic materials. Recently, a negative magnetoresistance has been observed in the quantum limit of -AgSe, where only one band of…
Persistent Friedel oscillations in Graphene due to a weak magnetic field
Ke Wang, M. E. Raikh, T. A. Sedrakyan
Two opposite chiralities of Dirac electrons in a 2D graphene sheet modify the Friedel oscillations strongly: electrostatic potential around an impurity in graphene decays much fast…