19 citations · 92 across the 24 of their papers we have counts for
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Kondo overscreening in the presence of superconductivity
Pradip Kattel, Abay Zhakenov, Natan Andrei
We consider a model describing a system where the superconductivity competes with the overscreened Kondo effect. The model consists of a single spin quantum impurity…
Edge modes and boundary impurities in the anisotropic Heisenberg spin chain
Pradip Kattel, Parameshwar R. Pasnoori, J. H. Pixley +1
We present a comprehensive analysis of boundary phenomena in a spin- anisotropic Heisenberg chain (XXZ-) in the gapped antiferromagnetic phase, with a par…
Quantum Zeno Effect in Noisy Integrable Quantum Circuits for Impurity Models
Yicheng Tang, Pradip Kattel, J. H. Pixley +1
We theoretically study the open quantum system dynamics (in the Trotterized limit) of integrable quantum circuits in the presence of onsite dephasing noise with a spin-$\frac{1}{2}…
Edge Spin fractionalization in one-dimensional spin- quantum antiferromagnets
Pradip Kattel, Yicheng Tang, J. H. Pixley +1
We show that a gapped spin- chain with antiferromagnetic (AFM) order exhibits in the thermodynamic limit exponentially localized fractional edge modes when the…
A spin chain with non-Hermitian symmetric boundary couplings: exact solution, dissipative Kondo effect, and phase transitions on the edge
Pradip Kattel, Parameshwar R. Pasnoori, J. H. Pixley +1
We construct an exactly solvable symmetric non-Hermitian model where a spin isotropic quantum Heisenberg spin chain is coupled to two spin$-\frac{1}{2}…
Dissipation driven phase transition in the non-Hermitian Kondo model
Pradip Kattel, Abay Zhakenov, Parameshwar R. Pasnoori +2
Non-Hermitian Hamiltonians capture several aspects of open quantum systems, such as dissipation of energy and non-unitary evolution. An example is an optical lattice where the inel…
The Kondo effect in the quantum spin chain
Pradip Kattel, Yicheng Tang, J. H. Pixley +1
We investigate the boundary phenomena that arise in a finite-size spin chain interacting through an interaction with a spin impurity located at its edge. Up…