Zobrazeno 1 - 10
of 954
pro vyhledávání: '"A. Dalui"'
We investigate chaos in the dynamics of massless particles near the horizon of static spherically symmetric black holes in two well-motivated models of $f(R)$ gravity. In both these models, we probe chaos in the particle trajectories (under suitable
Externí odkaz:
http://arxiv.org/abs/2405.09945
Publikováno v:
Phys.Lett.B 856 (2024) 138929
We compute the Lyapunov exponents for test particles orbiting in unstable circular trajectories around D-dimensional Reissner-Nordstr\"om (RN) black holes, scrutinizing instances of the chaos bound violation. Notably, we discover that an increase in
Externí odkaz:
http://arxiv.org/abs/2404.18193
In this paper, we propose a new Analogue Gravity example - a spinning (or Kerr) Black Hole in an extended fluid model. The fluid model receives Berry curvature contributions and applies to electron dynamics in Condensed Matter lattice systems in the
Externí odkaz:
http://arxiv.org/abs/2402.15540
Autor:
Guha, Shramana, Dalui, Amit, Sarkar, Piyush Kanti, Roy, Sima, Paul, Atanu, Kamilya, Sujit, Mondal, Abhishake, Dasgupta, Indra, Sarma, D. D., Acharya, Somobrata
Stereochemically active lone-pair (SCALP) cations are attractive units for realizing optical anisotropy. Antimony (III) chloride perovskites with SCALP have remained largely unknown till date. We synthesized vacancy ordered Cs3Sb2Cl9 perovskite singl
Externí odkaz:
http://arxiv.org/abs/2312.01318
Autor:
Das, Surajit, Dalui, Surojit
This article is devoted to investigate the effects of $f(R)$ theory in the dynamics of a massless particle near the horizon of a static spherically symmetric (SSS) black hole. Deriving the equations of motion within $f(R)$ gravitational theories, nov
Externí odkaz:
http://arxiv.org/abs/2312.00449
Human gender classification based on biometric features is a major concern for computer vision due to its vast variety of applications. The human ear is popular among researchers as a soft biometric trait, because it is less affected by age or changi
Externí odkaz:
http://arxiv.org/abs/2308.08797
The present paper is based on a previous work (involving two of the present authors) where a generalized fluid dynamical model was proposed. The underlying symplectic structure of the Lagrangian discrete degrees of freedom obeyed a Non-Commutative al
Externí odkaz:
http://arxiv.org/abs/2306.12201
Autor:
Das, Bikash, Ghosh, Subrata, Sengupta, Shamashis, Auban-Senzier, Pascale, Monteverde, Miguel, Dalui, Tamal Kumar, Kundu, Tanima, Saha, Rafikul Ali, Maity, Sujan, Paramanik, Rahul, Ghosh, Anudeepa, Palit, Mainak, Bhattacharjee, Jayanta K, Mondal, Rajib, Datta, Subhadeep
Manipulation of long-range order in two-dimensional (2D) van der Waals (vdW) magnetic materials (e.g., CrI$_3$, CrSiTe$_3$ etc.), exfoliated in few-atomic layer, can be achieved via application of electric field, mechanical-constraint, interface engi
Externí odkaz:
http://arxiv.org/abs/2303.06732
Autor:
Dalui, T. K., Das, B., Barman, C. K., Ghose, P. K., Sarma, A., Mahatha, S. K., Diekmann, F., Rossnagel, K., Majumdar, S., Alam, A., Giri, S.
Publikováno v:
J. Phys.: Condens. Matter 35, 465701 (2023)
We propose SnBi2Te4 to be a novel candidate material exhibiting temperature (T) mediated transitions between rich topological phases. From a combined theoretical and experimental studies, we find that SnBi2Te4 goes from a low-T topological semimetall
Externí odkaz:
http://arxiv.org/abs/2212.07148
Publikováno v:
Journal of Basic and Applied Zoology, Vol 85, Iss 1, Pp 1-13 (2024)
Abstract Background There are many infectious diseases in the world caused by parasites. Among them, toxoplasmosis, American trypanosomiasis, African trypanosomiasis, leishmaniasis, neosporosis and malaria are more common and contribute to a majority
Externí odkaz:
https://doaj.org/article/2c418ae662a7476da0f7bc73c170b3a8
