Search Results - "Roychowdhury, Krishanu"

Stretched-exponential melting of a dynamically frozen state under imprinted phase noise in the ising chain in a transverse field by Roychowdhury, Krishanu, Das, Arnab

“…The concept of dynamical freezing is a phenomenon where a suitable set of local observables freezes under a strong periodic drive in a quantum many-body…”
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Spin-textured Volkov–Pankratov states and their tunnel magnetoresistance response by Adak, Vivekananda, Chakraborty, Subhadeep, Roychowdhury, Krishanu, Das, Sourin

“…Abstract Volkov-Pankratov (VP) states are a family of sub-gap states that appear at the smooth interface/domain wall between topologically distinct gapped…”
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Interplay of charge and spin fluctuations of strongly interacting electrons on the kagome lattice by Pollmann, Frank, Roychowdhury, Krishanu, Hotta, Chisa, Penc, Karlo

“…We study electrons hopping on a kagome lattice at third filling described by an extended Hubbard Hamiltonian with on-site and nearest-neighbor repulsions in…”
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Entanglement dualities in supersymmetry by Jonsson, Robert H., Hackl, Lucas, Roychowdhury, Krishanu

“…We derive a general relation between the bosonic and fermionic entanglement in the ground states of supersymmetric quadratic Hamiltonians. For this, we…”
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Pseudospin-valve effect on transport in junctions of three-dimensional topological insulator surfaces by Roy, Sthitadhi, Roychowdhury, Krishanu, Das, Sourin

“…We show that the surface states of pristine 3D topological insulators (TIs) are analogs of ferromagnetic half metals due to complete polarization of an…”
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Topological mechanics from supersymmetry by Attig, Jan, Roychowdhury, Krishanu, Lawler, Michael J., Trebst, Simon

“…In topological mechanics, the identification of a mechanical system's rigidity matrix with an electronic tight-binding model allows one to infer topological…”
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Spin-polarized voltage probes for helical edge state: A model study by Adak, Vivekananda, Roychowdhury, Krishanu, Das, Sourin

“…Theoretical models of a spin-polarized voltage probe (SPVP) tunnel-coupled to the helical edge states (HES) of a quantum spin Hall system (QSHS) are studied…”
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Topology and Geometry of Spin Origami by Roychowdhury, Krishanu, Rocklin, D Zeb, Lawler, Michael J

“…Kagome antiferromagnets are known to be highly frustrated and degenerate when they possess simple, isotropic interactions. We consider the entire class of…”
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Topology in Nonlinear Mechanical Systems by Lo, Po-Wei, Santangelo, Christian D., Chen, Bryan Gin-ge, Jian, Chao-Ming, Roychowdhury, Krishanu, Lawler, Michael J.

“…Many advancements have been made in the field of topological mechanics. The majority of the work, however, concerns the topological invariant in a linear…”
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Stretched-Exponential Melting of a Dynamically Frozen State Under Imprinted Phase Noise in the Ising Chain in a Transverse Field by Roychowdhury, Krishanu, Das, Arnab

“…Eur. Phys. J. B (2024) 97:134 Dynamical freezing is a phenomenon where a set of local observables emerges as approximate but stable conserved quantities…”
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Effects of surface potentials on Goos-Haenchen and Imbert-Fedorov shifts in Weyl semimetals by Dongre, Ninad Kailas, Roychowdhury, Krishanu

“…Weyl semimetals exhibit exotic transport responses, among which, recently Goos-Haenchen (GH) and Imbert-Fedorov (IF) effects have received a revived attention,…”
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Z sub(2) topological liquid of hard-core bosons on a kagome lattice at 1/3 filling by Roychowdhury, Krishanu, Bhattacharjee, Subhro, Pollmann, Frank

“…We consider hard-core bosons on the kagome lattice in the presence of short-range repulsive interactions and focus particularly on the filling factor 1/3. In…”
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Z 2 topological liquid of hard-core bosons on a kagome lattice at 1 / 3 filling by Roychowdhury, Krishanu, Bhattacharjee, Subhro, Pollmann, Frank

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Dynamics and correlations at a quantum phase transition beyond Kibble-Zurek by Roychowdhury, Krishanu, Moessner, Roderich, Das, Arnab

“…Phys. Rev. B 104, 014406 (2021) Kibble-Zurek theory (KZ) stands out as the most robust theory of defect generation in the dynamics of phase transitions. KZ…”
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Entanglement dualities in supersymmetry by Jonsson, Robert H, Hackl, Lucas, Roychowdhury, Krishanu

“…Phys. Rev. Research 3, 023213 (2021) We derive a general relation between the bosonic and fermionic entanglement in the ground states of supersymmetric…”
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Spin-polarized voltage probes for helical edge state: a model study by Adak, Vivekananda, Roychowdhury, Krishanu, Das, Sourin

“…Physica E: Low-dimensional Systems and Nanostructures, 139 , 115125 (2022) Theoretical models of a spin-polarized voltage probe (SPVP) tunnel-coupled to the…”
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Tensor renormalization group approach to classical dimer models by Roychowdhury, Krishanu, Huang, Ching-Yu

“…We analyze classical dimer models on a square and a triangular lattice using a tensor network representation of the dimers. The correlation functions are…”
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Volkov-Pankratov states on the edge of a quantum spin Hall system by Adak, Vivekananda, Chakraborty, Subhadeep, Roychowdhury, Krishanu, Das, Sourin

“…New Journal of Physics, Volume 26, February 2024 Volkov-Pankratov (VP) states are a family of sub-gap states which appear at the smooth interface/domain wall…”
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Supersymmetry on the lattice: Geometry, Topology, and Spin Liquids by Roychowdhury, Krishanu, Attig, Jan, Trebst, Simon, Lawler, Michael J

“…In quantum mechanics, supersymmetry (SUSY) posits an equivalence between two elementary degrees of freedom, bosons and fermions. Here we show how this…”
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Spin Berry phase in a helical edge state: Sz nonconservation and transport signatures by Adak, Vivekananda, Roychowdhury, Krishanu, Das, Sourin

“…Phys. Rev. B 102, 035423 (2020) Topological protection of edge state in quantum spin Hall systems relies only on time-reversal symmetry. Hence, S z…”
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