Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Nizami, Amin A"'
Autor:
Nizami, Amin A., Shrestha, Ankit W.
Publikováno v:
Phys. Rev. E 110, 034201 (2024)
The complexity of quantum states under dynamical evolution can be investigated by studying the spread with time of the state over a pre-defined basis. It is known that this complexity is minimised by choosing the Krylov basis, thus defining the sprea
Externí odkaz:
http://arxiv.org/abs/2405.16182
Autor:
Nizami, Amin A., Shrestha, Ankit W.
Publikováno v:
Phys.Rev.E 108 (2023) 5, 054222
Krylov complexity is an important dynamical quantity with relevance to the study of operator growth and quantum chaos, and has recently been much studied for various time-independent systems. We initiate the study of K-complexity in time-dependent (d
Externí odkaz:
http://arxiv.org/abs/2305.00256
Autor:
Jain, Aditya, Nizami, Amin A.
Publikováno v:
Eur.Phys.J.C 82 (2022) 11, 1065
We construct superconformal invariants in superspace which are used to build 3-point correlators of spinning operators in general $\cal{N}=2$ superconformal field theories in three dimensions. Our systematic analysis includes various relations betwee
Externí odkaz:
http://arxiv.org/abs/2205.11157
Autor:
Nizami, Amin A1 (AUTHOR) amin.nizami@ashoka.edu.in
Publikováno v:
Pramana: Journal of Physics. Dec2024, Vol. 98 Issue 4, p1-10. 10p.
Publikováno v:
JHEP 09(2021),041
In this paper we use the spinor-helicity formalism to calculate 3-point functions involving scalar operators and spin-$s$ conserved currents in general 3d CFTs. In spinor-helicity variables we notice that the parity-even and the parity-odd parts of a
Externí odkaz:
http://arxiv.org/abs/2106.00016
We show that general parity-violating 3d conformal field theories show a double copy structure for momentum space 3-point functions of conserved currents, stress tensor and marginal scalar operators. Splitting up the CFT correlator into two parts - c
Externí odkaz:
http://arxiv.org/abs/2104.12803
We study the parity-odd sector of 3-point functions comprising of scalar operators and conserved currents in conformal field theories in momentum space. We use momentum space conformal Ward identities as well as spin-raising and weight-shifting opera
Externí odkaz:
http://arxiv.org/abs/2101.11635
Autor:
Nizami, Amin A.
Periodically kicked Floquet systems such as the kicked rotor are a paradigmatic and illustrative simple model of chaos. For non-integrable quantum dynamics there are several diagnostic measures of the presence of (or the transition to) chaotic behavi
Externí odkaz:
http://arxiv.org/abs/2007.07283
Publikováno v:
J. High Energ. Phys. (2017) 2017: 154
We describe general features of thermal correlation functions in quantum systems, with specific focus on the fluctuation-dissipation type relations implied by the KMS condition. These end up relating correlation functions with different time ordering
Externí odkaz:
http://arxiv.org/abs/1706.08956