1 citations · 2 across the 5 of their papers we have counts for
8 papers · 1 filter
A General Approach to Bosonization
Girish S. Setlur, V. Meera
We summarize recent developments in the field of higher dimensional bosonization made by the authors and collaborators and propose a general formula for the field operator in terms…
Sea-Boson Analysis of the Infinite-U Hubbard Model
Girish S. Setlur
By expanding the projection operator in powers of the density fluctuations, we conjecture a hamiltonian purely quadratic in the sea-bosons that reproduces the right spin and charge…
Momentum Distribution of a Weakly Coupled Fermi Gas
Girish S. Setlur
We apply the sea-boson method to compute the momentum distribution of a spinless continuum Fermi gas in two space dimensions with short-range repulsive interactions. We find that t…
Quenched Disorder From Sea-Bosons
Girish S. Setlur
The degenerate Fermi gas coupled to a random potential is used to study metal-insulator transitions in various dimensions. We first recast the problem in the sea-boson language tha…
A.C. Conductivity of a Disordered Metal
Girish S. Setlur
The degenerate free Fermi gas coupled to a random potential is used to compute a.c. conductivity in various dimensions. We first formally diagonalise the hamiltonian using an appro…
Exact Single-Particle Green Functions of Fermi Systems Without Using Bosonization or Are Hartree-Fock and Random Phase Approximations 'Controlled Approximations' ?
Girish S. Setlur, Yia-Chung Chang
In this article, we revisit the question of the validity of Hartree-Fock and random-phase approximations. We show that there is a connection between the two and while the RPA as it…