Angsula Ghosh

activity

19972008

most citedRenormalization in Nonrelativistic Quantum Mechanics

41 citations · 133 across the 14 of their papers we have counts for

collaborators

14 papers

cond-mat.stat-mech2008★ 8 cited

Anisotropic Heisenberg model on hierarchical lattices with aperiodic interactions: a renormalization-group approach

N. S. Branco, J. Ricardo de Sousa, Angsula Ghosh

Using a real-space renormalization-group approximation, we study the anisotropic quantum Heisenberg model on hierarchical lattices, with interactions following aperiodic sequences.…

cond-mat.str-el2005

Non-uniform phases in metals with local moments

Angsula Ghosh, E. Miranda

The two-dimensional Kondo lattice model with both nearest and next-nearest neighbor exchange interactions is studied within a mean-field approach and its phase diagram is determine…

cond-mat.str-el2001★ 4 cited

Mixing of $d_{x^{2} - y^{2}}$ and $d_{x y}$ superconducting states for different filling and temperature

Angsula Ghosh, Sadhan K. Adhikari

We investigate the solution of the gap equation for mixed order parameter symmetry states as a function of filling using a two-dimensional tight-binding model incorporating second-…

cond-mat.supr-con2000★ 7 cited

Mixing of superconducting $d_{x^{2} - y^{2}}$ state with s-wave states for different filling and temperature

Angsula Ghosh, Sadhan K. Adhikari

We study the order parameter for mixed-symmetry states involving a major $d_{x^{2} - y^{2}}$ state and various minor s-wave states ( $s$ , $s_{x y}$ , and $s_{x^{2} + y^{2}}$ ) for different fillin…

cond-mat.stat-mech2000★ 1 cited

Field behavior of an Ising model with aperiodic interactions

Angsula Ghosh, T. A. S. Haddad, S. R. Salinas

We derive exact renormalization-group recursion relations for an Ising model, in the presence of external fields, with ferromagnetic nearest-neighbor interactions on Migdal-Kadanof…

cond-mat.stat-mech2000★ 2 cited

Tricritical behaviour in deterministic aperiodic Ising systems

T. A. S. Haddad, Angsula Ghosh, S. R. Salinas

We use a mixed-spin model, with aperiodic ferromagnetic exchange interactions and crystalline fields, to investigate the effects of deterministic geometric fluctuations on first-or…

cond-mat.supr-con1999★ 13 cited

Two phase transitions in $(d_{x^{2} - y^{2}} + i s)$ -wave superconductors

Angsula Ghosh, Sadhan K. Adhikari

We study numerically the temperature dependencies of specific heat, susceptibility, penetration depth, and thermal conductivity of a coupled $(d_{x^{2} - y^{2}} + i s)$ -wave Bardeen-Cooper-…

cond-mat.supr-con1999★ 9 cited

Phase transition from a $d_{x^{2} - y^{2}}$ to $d_{x^{2} - y^{2}} + d_{x y}$ superconductor

Angsula Ghosh, Sadhan K. Adhikari

We study the phase transition from a $d_{x^{2} - y^{2}}$ to $d_{x^{2} - y^{2}} + d_{x y}$ superconductor using the tight-binding model of two-dimensional cuprates. As the temperature is lowered p…

cond-mat.supr-con1999★ 14 cited

Phase transition from a $d_{x^{2} - y^{2}}$ to $d_{x^{2} - y^{2}} + i d_{x y}$ superconductor

Angsula Ghosh, Sadhan K. Adhikari

The temperature dependencies of specific heat and spin susceptibility of a coupled $d_{x^{2} - y^{2}} + i d_{x y}$ superconductor in the presence of a weak $d_{x y}$ component are investigat…

nucl-th1998★ 4 cited

Dimensional versus cut-off renormalization and the nucleon-nucleon interaction

Angsula Ghosh, Sadhan K. Adhikari, B. Talukdar

The role of dimensional regularization is discussed and compared with that of cut-off regularization in some quantum mechanical problems with ultraviolet divergence in two and thre…

cond-mat.str-el1998★ 6 cited

Two phase transitions in (s+id)-wave Bardeen-Cooper-Schrieffer superconductivity

Angsula Ghosh, Sadhan K. Adhikari

We establish universal behavior in temperature dependencies of some observables in $(s + i d)$ -wave BCS superconductivity in the presence of a weak $s$ wave. There also could appear a…

cond-mat.supr-con1997★ 11 cited

Universal scaling in BCS superconductivity in two dimensions in non-s waves

Sadhan K. Adhikari, Angsula Ghosh

The solutions of a renormalized BCS model are studied in two space dimensions in $s$ , $p$ and $d$ waves for finite-range separable potentials. The gap parameter, the critical tempe…

cond-mat.supr-con1997★ 13 cited

Universal scaling in BCS superconductivity in three dimensions in non- $s$ waves

Angsula Ghosh, Sadhan K. Adhikari

The solutions of a renormalized BCS equation are studied in three space dimensions in $s$ , $p$ and $d$ waves for finite-range separable potentials in the weak to medium coupling re…

hep-th1997★ 41 cited

Renormalization in Nonrelativistic Quantum Mechanics

Sadhan K. Adhikari, Angsula Ghosh

The importance and usefulness of renormalization are emphasized in nonrelativistic quantum mechanics. The momentum space treatment of both two-body bound state and scattering probl…

Anisotropic Heisenberg model on hierarchical lattices with aperiodic interactions: a renormalization-group approach

Non-uniform phases in metals with local moments

Mixing of dx2−y2​ and dxy​ superconducting states for different filling and temperature

Mixing of superconducting dx2−y2​ state with s-wave states for different filling and temperature

Field behavior of an Ising model with aperiodic interactions

Tricritical behaviour in deterministic aperiodic Ising systems

Two phase transitions in (dx2−y2​+is)-wave superconductors

Phase transition from a dx2−y2​ to dx2−y2​+dxy​ superconductor

Phase transition from a dx2−y2​ to dx2−y2​+idxy​ superconductor

Dimensional versus cut-off renormalization and the nucleon-nucleon interaction

Two phase transitions in (s+id)-wave Bardeen-Cooper-Schrieffer superconductivity

Universal scaling in BCS superconductivity in two dimensions in non-s waves

Universal scaling in BCS superconductivity in three dimensions in non-s waves

Renormalization in Nonrelativistic Quantum Mechanics

Mixing of $d_{x^{2} - y^{2}}$ and $d_{x y}$ superconducting states for different filling and temperature

Mixing of superconducting $d_{x^{2} - y^{2}}$ state with s-wave states for different filling and temperature

Two phase transitions in $(d_{x^{2} - y^{2}} + i s)$ -wave superconductors

Phase transition from a $d_{x^{2} - y^{2}}$ to $d_{x^{2} - y^{2}} + d_{x y}$ superconductor

Phase transition from a $d_{x^{2} - y^{2}}$ to $d_{x^{2} - y^{2}} + i d_{x y}$ superconductor

Universal scaling in BCS superconductivity in three dimensions in non- $s$ waves