Many-body quantum chaos: Recent developments and applications to nuclei

JMG Gómez, K Kar, VKB Kota, RA Molina, A Relaño… - Physics Reports, 2011‏ - Elsevier
In the last decade, there has been an increasing interest in the analysis of energy level
spectra and wave functions of nuclei, particles, atoms and other quantum many-body …

Embedded random matrix ensembles for complexity and chaos in finite interacting particle systems

VKB Kota - Physics Reports, 2001‏ - Elsevier
Universal properties of simple quantum systems whose classical counter parts are chaotic,
are modeled by the classical random matrix ensembles and their interpolations …

Quantum and classical Lyapunov exponents in atom-field interaction systems

J Chávez-Carlos, B López-del-Carpio… - Physical review …, 2019‏ - APS
The exponential growth of the out-of-time-ordered correlator (OTOC) has been proposed as
a quantum signature of classical chaos. The growth rate is expected to coincide with the …

Quantum chaos, delocalization, and entanglement in disordered Heisenberg models

WG Brown, LF Santos, DJ Starling, L Viola - Physical Review E—Statistical …, 2008‏ - APS
We investigate disordered one-and two-dimensional Heisenberg spin lattices across the
transition from integrability to quantum chaos from both statistical many-body and quantum …

Energy levels of Th between 7.3 and 8.3 eV

OA Herrera-Sancho, N Nemitz, MV Okhapkin… - Physical Review A …, 2013‏ - APS
Using resonant two-step laser excitation of trapped 232 Th+ ions, we observe 43 previously
unknown energy levels within the energy range from 7.3 to 8.3 eV. The high density of states …

Embedded random matrix ensembles from nuclear structure and their recent applications

VKB Kota, ND Chavda - International Journal of Modern Physics E, 2018‏ - World Scientific
Embedded random matrix ensembles generated by random interactions (of low body rank
and usually two-body) in the presence of a one-body mean field, introduced in nuclear …

[كتاب][B] Spectral distributions in nuclei and statistical spectroscopy

VKB Kota - 2010‏ - books.google.com
This book a first comprehensive review on statistical spectroscopy deals with two related yet
distinct topics a" averages and fluctuations. While fluctuations have been dealt with in …

Quantum chaos in the Dicke model and its variants

D Tiwari, S Banerjee - Proceedings of the Royal Society …, 2023‏ - royalsocietypublishing.org
Recently, the out-of-time-ordered correlator (OTOC) has gained much attention as an
indicator of quantum chaos. In the semi-classical limit, its exponential growth rate resembles …

Structure of wave functions in -body random matrix ensembles

VKB Kota, R Sahu - Physical Review E, 2001‏ - APS
Random matrix ensembles defined by a mean-field one body plus a chaos generating
random two-body interaction [called embedded ensembles of (1+ 2)-body interactions] …

Time-reversal invariance violation in neutron-nucleus scattering

P Fadeev, VV Flambaum - Physical Review C, 2019‏ - APS
Parity (P) and time-reversal (T) violating effects are enhanced a million times in neutron
reactions near p-wave nuclear compound resonances. Planning and interpretation of …