G. J. Sreejith

Group convolutional neural network for the low-energy spectrum in the quantum dimer model

O.D. Sharma, Sandipan Manna, P. S. S. Rao, G. J. Sreejith

We obtain the $\rm{p4m}$-symmetric Group Convolutional Neural Network (GCNN) representations of the lowest energy eigenstate of the quantum dimer model on $L{\times} L$ square-lattice in each of the ${(L^2+18L+72)}/{8}$ irreducible representations (irreps) of the lattice space group and use these to investigate …

Full distribution and large deviations of local observables in an exactly solvable current-carrying steady state of a strongly driven X X Z chain

Sandipan Manna, G. J. Sreejith

Current-carrying steady states of interacting spin chains exhibit rich structures generated through an interplay of constraints from the Hamiltonian dynamics and those induced by the current. The XXZ spin chain when coupled to maximally polarizing Lindblad terms (with opposite signs on either …

Projected ensemble in a system with locally supported conserved charges

Sandipan Manna, Sthitadhi Roy, G. J. Sreejith

The investigation of ergodicity or lack thereof in isolated quantum many-body systems has conventionally focused on the description of the reduced density matrices of local subsystems in the contexts of thermalization, integrability, and localization. Recent experimental capabilities to measure the full distribution …

Projected ensemble in a system with conserved charges with local support

Sandipan Manna, Sthitadhi Roy, G. J. Sreejith

The investigation of ergodicity or lack thereof in isolated quantum many-body systems has conventionally focused on the description of the reduced density matrices of local subsystems in the contexts of thermalization, integrability, and localization. Recent experimental capabilities to measure the full distribution …

Edge reconstruction of a compressible quantum Hall fluid in the filling fraction range 1/3 to 2/3

Suvankar Purkait, Tanmay Maiti, Pooja Agarwal, G. J. Sreejith et autres

Edge reconstruction of gate-tunable compressible quantum Hall fluids in the filling fraction range 1/3 to 2/3 is studied by measuring transmitted conductance of two individually excited fractional ${e}^{2}/3h$ edge modes of bulk 2/3 fractional quantum Hall fluid. Our findings reveal that the …

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Splitting of the Girvin-MacDonald-Platzman Density Wave and the Nature of Chiral Gravitons in the Fractional Quantum Hall Effect

Ajit Coimbatore Balram, G. J. Sreejith, Jainendra K. Jain

A fundamental manifestation of the nontrivial correlations of an incompressible fractional quantum Hall (FQH) state is that an electron added to it disintegrates into more elementary particles, namely fractionally-charged composite fermions (CFs). We show here that the Girvin-MacDonald-Platzman (GMP) density-wave excitation of …

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Proposal for bulk measurement of braid statistics in the fractional quantum Hall effect

Mytraya Gattu, G. J. Sreejith, Jainendra K. Jain

The quasiparticles (QPs) or quasiholes (QHs) of fractional quantum Hall states have been predicted to obey fractional braid statistics, which refers to the Berry phase (in addition to the usual Aharonov-Bohm phase) associated with an exchange of two QPs or two QHs …

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Edge reconstruction of compressible Quantum Hall fluid in the filling fraction range 1/3 to 2/3

Suvankar Purkait, Tanmay Maiti, Pooja Agarwal, G. J. Sreejith et autres

Edge reconstruction of gate-tunable compressible quantum Hall fluids in the filling fraction range 1/3 to 2/3 is studied by measuring transmitted conductance of two individually excited fractional $e^2/3h$ edge modes of bulk 2/3 fractional quantum Hall fluid. Our findings reveal that the …

Universality of quantum phase transitions in the integer and fractional quantum Hall regimes

Simrandeep Kaur, Tanima Chanda, Kazi Rafsanjani Amin, Divya Sahani et autres

Fractional quantum Hall (FQH) phases emerge due to strong electronic interactions and are characterized by anyonic quasiparticles, each distinguished by unique topological parameters, fractional charge, and statistics. In contrast, the integer quantum Hall (IQH) effects can be understood from the band topology …

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Proposal for bulk measurement of braid statistics in fractional quantum Hall effect

Mytraya Gattu, G. J. Sreejith, Jainendra K. Jain

The quasiparticles (QPs) or quasiholes (QHs) of fractional quantum Hall states have been predicted to obey fractional braid statistics, which refers to the Berry phase (in addition to the usual Aharonov-Bohm phase) associated with an exchange of two QPs or two QHs, …

Eliashberg Theory for Dynamical Screening in Bilayer Exciton Condensation

G. J. Sreejith, Jay Deep Sau, Sankar Das Sarma

We study the effect of dynamical screening of interactions on the transition temperatures (T_{c}) of exciton condensation in a symmetric bilayer of quadratically dispersing electrons and holes by solving the linearized Eliashberg equations for the anomalous interlayer Green's functions. We find that …

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Splitting of Girvin-MacDonald-Platzman density wave and the nature of chiral gravitons in fractional quantum Hall effect

Ajit Coimbatore Balram, G. J. Sreejith, Jainendra K. Jain

A fundamental manifestation of the nontrivial correlations of an incompressible fractional quantum Hall (FQH) state is that an electron added to it disintegrates into more elementary particles, namely fractionally-charged composite fermions (CFs). We show here that the Girvin-MacDonald-Platzman (GMP) density-wave excitation of …