6 citations · 10 across the 5 of their papers we have counts for
5 papers
Specific heat of Bosons in a lattice
R. Ramakumar, A. N. Das
We present a theoretical study of specific heat of bosons () in a simple cubic lattice. We have studied the non-interacting bosons and the Tonks gas. For both cases, the …
Effect of different site energies on polaronic properties
Jayita Chatterjee, A. N. Das
Using the perturbation method based on a variational phonon basis obtained by the modified Lang-Firsov (MLF) transformation, the two-site single polaron Holstein model is studied i…
Two-site two-electron Holstein model: a perturbation study
Jayita Chatterjee, A. N. Das
The two-site two-electron Holstein model is studied within a perturbation method based on a variational phonon basis obtained through the modified Lang-Firsov (MLF) transformation.…
Perturbative expansion using variational phonon basis for Holstein model
Jayita Chatterjee, A. N. Das, P. Choudhury
A simple variational displacement phonon basis, obtained through the modified Lang-Firsov (MLF) transformation, is proposed to study the Holstein model.This phonon basis contains o…
An extended pair tunneling model: studies on bilayer splitting and some superconducting state properties
A. N. Das, Biplab Chattopadhyay
We consider an extended version of the pair tunneling model including interlayer single particle hopping (ISPH) as a complementary process to pair tunneling. The normal state gap,…