U
Uma Divakaran
Researcher at Indian Institutes of Technology
Publications - 58
Citations - 1096
Uma Divakaran is an academic researcher from Indian Institutes of Technology. The author has contributed to research in topics: Quantum phase transition & Quantum critical point. The author has an hindex of 15, co-authored 54 publications receiving 883 citations. Previous affiliations of Uma Divakaran include Saarland University & Indian Institute of Technology Kanpur.
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Journal ArticleDOI
Three-site interacting spin chain in a staggered field: fidelity versus Loschmidt echo.
TL;DR: The ground state fidelity and the ground state Loschmidt echo of a three-site interacting XX chain in presence of a staggered field which exhibits special types of quantum phase transitions due to change in the topology of the Fermi surface are studied.
Journal ArticleDOI
Many-body quantum thermal machines.
Victor Mukherjee,Uma Divakaran +1 more
TL;DR: In this article, a short review of the recent developments on technologies based on many-body quantum systems is presented, which mainly focus on manybody effects in quantum thermal machines and briefly address the role played by manybody systems in the development of quantum batteries and quantum probes.
Book ChapterDOI
Defect Production Due to Quenching Through a Multicritical Point and Along a Gapless Line
TL;DR: The exciting physics of quantum phase transitions has been explored extensively in the last few years [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, as mentioned in this paper.
Posted Content
Transverse field spin models: From Statistical Physics to Quantum Information
TL;DR: In this paper, the authors review quantum phase transitions of spin systems in transverse magnetic fields taking the examples of the spin-1/2 Ising and XY models in a transverse field.
Journal ArticleDOI
Landau-Zener problem with waiting at the minimum gap and related quench dynamics of a many-body system
TL;DR: In this article, a technique for solving the Landau-Zener (LZ) problem of finding the probability of excitation in a two-level system is discussed, where the idea of time reversal for the Schrodinger equation is employed to obtain the state reached at the final time and hence the excitation probability.