133 citations · 1.5k across the 54 of their papers we have counts for
21 papers · 1 filter
Nonequilibrium full counting statistics of multicomponent strongly-interacting quantum gases with defects
Ovidiu I. Patu, Oleksandr Gamayun, Catalin Pascu Moca
We investigate the full counting statistics of a one-dimensional multicomponent impenetrable gas released from a bipartite state in the presence of a local defect. Spin--charge sep…
The exact dynamical structure factor of one-dimensional hard rods and its universal random matrix behavior
Oleksandr Gamayun, Miłosz Panfil
We obtain an exact analytic expression for the dynamical structure factor of one-dimensional quantum gas of hard rods. Our result is valid for an arbitrary many-body state of the s…
One-dimensional Fermi polaron after a kick: two-sided singularity of the momentum distribution, Bragg reflection and other exact results
Oleksandr Gamayun, Oleg Lychkovskiy
A mobile impurity particle immersed in a quantum fluid forms a polaron - a quasiparticle consisting of the impurity and a local disturbance of the fluid around it. We ask what happ…
Kubo-Martin-Schwinger relation for an interacting mobile impurity
Oleksandr Gamayun, Miłosz Panfil, Felipe Taha Sant'Ana
In this work we study the Kubo-Martin-Schwinger (KMS) relation in the Yang-Gaudin model of an interacting mobile impurity. We use the integrability of the model to compute the dyna…
Emergence of anyonic correlations from spin and charge dynamics in one dimension
Oleksandr Gamayun, Eoin Quinn, Kemal Bidzhiev +1
We propose a transformation for spin and charge degrees of freedom in one-dimensional lattice systems, constrained to have no doubly occupied sites, that allows direct access to th…
Mobile impurity in a one-dimensional gas at finite temperatures
Oleksandr Gamayun, Miłosz Panfil, Felipe Taha Sant'Ana
We consider the McGuire model of a one-dimensional gas of free fermions interacting with a single impurity. We compute the static one-body function and momentum distribution of the…