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- Maxwell Institute for Mathematical SciencesGB96 papers
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9 papers · 1 filter
Gauge transformations and Galilean covariance in nonlinear gauge-coupled quantum fluids
Yvan Buggy, Patrik Öhberg
We investigate certain invariance properties of quantum fluids subject to a nonlinear gauge potential. In particular, we derive the covariant transformation laws for the nonlinear…
Hydrodynamics of nonlinear gauge-coupled quantum fluids
Y. Buggy, L. G. Phillips, P. Öhberg
By constructing a hydrodynamic canonical formalism, we show that the occurrence of an arbitrary density-dependent gauge potential in the meanfield Hamiltonian of a Bose-condensed f…
Universality and tails of long range interactions in one dimension
Manuel Valiente, Patrik Ohberg
Long-range interactions and, in particular, two-body potentials with power-law long-distance tails are ubiquitous in nature. For two bosons or fermions in one spatial dimension, th…
Spin Localization of a Fermi Polaron in a Quasirandom Optical Lattice
Callum W. Duncan, Niels J. S. Loft, Patrik Öhberg +2
Recently, the topics of many-body localization (MBL) and one-dimensional strongly interacting few-body systems have received a lot of interest. These two topics have been largely d…
Few-Body Route to One-Dimensional Quantum Liquids
Manuel Valiente, Patrik Ohberg
Gapless many-body quantum systems in one spatial dimension are universally described by the Luttinger liquid effective theory at low energies. Essentially, only two parameters ente…
Elementary excitations of chiral Bose-Einstein condensates
Matthew Edmonds, Manuel Valiente, Patrik Öhberg
We study the collective modes of a Bose-Einstein condensate subject to an optically induced density-dependent gauge potential. The corresponding interacting gauge theory lacks Gali…