Monalisa Singh Roy

The spin-Peierls transition at $T_{S P}$ of spin- $1/2$ chains with isotropic exchange interactions has previously been modeled as correlated for $T > T_{S P}$ and mean field for $T <…

cond-mat.str-el2019

Fermion parity gap and exponential ground state degeneracy of the one-dimensional Fermi gas with intrinsic attractive interaction

Monalisa Singh Roy, Manoranjan Kumar, Jay D. Sau +1

We examine the properties of a one-dimensional (1D) Fermi gas with attractive intrinsic (Hubbard) interactions in the presence of spin-orbit coupling and Zeeman field by numericall…

cond-mat.str-el2017

Characterization of Majorana-Ising phase transition in a helical liquid system

Sudip Kumar Saha, Dayasindhu Dey, Monalisa Singh Roy +2

We map an interacting helical liquid system, coupled to an external magnetic field and s-wave superconductor, to an XYZ spin system, and it undergoes Majorana-Ising transition by t…

Modeling the spin-Peierls transition of spin-1/2 chains with correlated states: J1​−J2​ model, CuGeO3​ and TTF-CuS4​C4​(CF3​)4​

Fermion parity gap and exponential ground state degeneracy of the one-dimensional Fermi gas with intrinsic attractive interaction

Characterization of Majorana-Ising phase transition in a helical liquid system

Modeling the spin-Peierls transition of spin- $1/2$ chains with correlated states: $J_{1} - J_{2}$ model, CuGeO $_{3}$ and TTF-CuS $_{4}$ C $_{4}$ (CF $_{3}$ ) $_{4}$