58 citations · 259 across the 21 of their papers we have counts for
23 papers
Transport Information Beyond Strong Eigenstate Thermalization
Avadhut V. Purohit, Harshit Sharma, Udaysinh T. Bhosale
Strong eigenstate thermalization (ETH) in operationally mean-ergodic, non-chaotic systems provides an opportunity to investigate whether Floquet eigenstates retain information abou…
Strong Eigenstate Thermalization from Mean-Ergodic Non-chaotic Dynamics
Avadhut V. Purohit, Harshit Sharma, Udaysinh T. Bhosale
We report an example of a many-body system, derived from the double kicked top (DKT), with non-chaotic yet mean-ergodic dynamics that displays \textit{strong} eigenstate thermaliza…
Quantum Kicked Top: A Paradigmatic Model
Avadhut V. Purohit, Udaysinh T. Bhosale
The quantum kicked top (QKT) is one of the most widely studied models in quantum chaos, providing a minimal yet powerful framework for exploring the relationship between classical…
Floquet Recurrences in the Double Kicked Top
Avadhut V. Purohit, Udaysinh T. Bhosale
We study exact quantum recurrences in the double kicked top (DKT), a driven spin model that extends the quantum kicked top (QKT) by introducing an additional time-reversal symmetry…
Higher-order spacings in the superposed spectra of random matrices with comparison to spacing ratios and application to complex systems
Sashmita Rout, Udaysinh T. Bhosale
Higher-order spacing statistics in the superposed spectra of circular random matrices of the same class are studied numerically. We conjecture that for given (or order )…
Exact Solvability and Integrability Signatures in a Periodically Driven Infinite-Range -Spin Kicked Top Model
Harshit Sharma, Sashmita Rout, Avadhut V. Purohit +1
We study the signatures of quantum integrability (QI) in a -spin kicked top model with infinite-range Ising interactions, subjected to periodic pulses of an external magnetic fi…
Study of double kicked top: a classical and quantum perspective
Avadhut V. Purohit, Udaysinh T. Bhosale
We study the double kicked top (DKT), which is an extension of the standard quantum kicked top (QKT) model. The model allows us to study the transition from time-reversal symmetric…
Exact Solvability Of Entanglement For Arbitrary Initial State in an Infinite-Range Floquet System
Harshit Sharma, Udaysinh T. Bhosale
Sharma and Bhosale [\href{https://journals.aps.org/prb/abstract/10.1103/PhysRevB.109.014412}{Phys. Rev. B \textbf{109}, 014412 (2024)}; \href{https://journals.aps.org/prb/abstract/…
Signatures of Integrability and Exactly Solvable Dynamics in an Infinite-Range Many-Body Floquet Spin System
Harshit Sharma, Udaysinh T. Bhosale
In a recent work Sharma and Bhosale [Phys. Rev. B, 109, 014412 (2024)], -spin Floquet model having infinite range Ising interaction was introduced. In this paper, we generalized…
Exactly solvable dynamics and signatures of integrability in an infinite-range many-body Floquet spin system
Harshit Sharma, Udaysinh T. Bhosale
We study qubits having infinite-range Ising interaction and subjected to periodic pulse of external magnetic field. We solve the cases of to qubits analytically, fin…
Universal scaling of higher-order spacing ratios in Gaussian random matrices
Udaysinh T. Bhosale
Higher-order spacing ratios are investigated analytically using a Wigner-like surmise for Gaussian ensembles of random matrices. For -th order spacing ratio , t…
Superposition and higher-order spacing ratios in random matrix theory with application to complex systems
Udaysinh T. Bhosale
The statistical properties of spectra of quantum systems within the framework of random matrix theory is widely used in many areas of physics. These properties are affected, if two…
NMR studies of quantum chaos in a two-qubit kicked top
V R Krithika, V S Anjusha, Udaysinh T. Bhosale +1
Quantum chaotic kicked top model is implemented experimentally in a two qubit system comprising of a pair of spin-1/2 nuclei using Nuclear Magnetic Resonance techniques. The essent…
Scaling in the eigenvalue fluctuations of the empirical correlation matrices
Udaysinh T. Bhosale, S. Harshini Tekur, M. S. Santhanam
The spectra of empirical correlation matrices, constructed from multivariate data, are widely used in many areas of sciences, engineering and social sciences as a tool to understan…
Periodicity of quantum correlations in the quantum kicked top
Udaysinh T. Bhosale, M. S. Santhanam
Quantum kicked top is a fundamental model for time-dependent, chaotic Hamiltonian system and has been realized in experiments as well. As the quantum kicked top can be represented…
Higher order spacing ratios in random matrix theory and complex quantum systems
S. Harshini Tekur, Udaysinh T. Bhosale, M. S. Santhanam
The distribution of the ratios of nearest neighbor level spacings has become a popular indicator of spectral fluctuations in complex quantum systems like interacting many-body loca…
Entanglement transitions induced by large deviations
Udaysinh T. Bhosale
The probability of large deviations of the smallest Schmidt eigenvalue for random pure states of bipartite systems, denoted as and , is computed analytically using a Coulomb…
Signatures of bifurcation on quantum correlations: Case of the quantum kicked top
Udaysinh T. Bhosale, M. S. Santhanam
Quantum correlations reflect the quantumness of a system and are useful resources for quantum information and computational processes. The measures of quantum correlations do not h…
Quantum Correlations in NMR systems
T. S. Mahesh, C. S. Sudheer Kumar, Udaysinh T. Bhosale
In conventional NMR experiments, the Zeeman energy gaps of the nuclear spin ensembles are much lower than their thermal energies, and accordingly exhibit tiny polarizations. Genera…
Simple permutation-based measure of quantum correlations and maximally-3-tangled states
Udaysinh T. Bhosale, Arul Lakshminarayan
Quantities invariant under local unitary transformations are of natural interest in the study of entanglement. This paper deduces and studies a particularly simple quantity that is…
Using Partial Transpose and Realignment to generate Local Unitary Invariants
Udaysinh T. Bhosale, K. V. Shuddhodan, Arul Lakshminarayan
Motivated by link transformations of lattice gauge theory, a method for generating local unitary invariants, especially for a system of qubits, has been pointed out in an earlier w…
Entanglement between two subsystems, the Wigner semicircle and extreme value statistics
Udaysinh T. Bhosale, Steven Tomsovic, Arul Lakshminarayan
The entanglement between two arbitrary subsystems of random pure states is studied via properties of the density matrix's partial transpose, . The density of states o…
Entanglement transitions in random definite particle states
Vikram S Vijayaraghavan, Udaysinh T. Bhosale, Arul Lakshminarayan
Entanglement within qubits are studied for the subspace of definite particle states or definite number of up spins. A transition from an algebraic decay of entanglement within two…