Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Abhishek Atreya"'
Autor:
Abhishek Atreya, Soma Sanyal
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 12, Pp 1-9 (2018)
Abstract In this work we investigate the possibility of generation of primordial magnetic field in the early universe near the QCD phase transition epoch via the collapse of Z(3) domains. The Z(3) domain walls arise in the deconfined phase of the QCD
Externí odkaz:
https://doaj.org/article/4f126a7935da40c5bc5a72a4378f72ec
Publikováno v:
Springer Proceedings in Physics ISBN: 9789813344075
Self-interacting dark matter (SIDM) is an intriguing possibility to address the small scale problems faced by the collisionless cold dark matter. The self interaction between the dark matter (DM) particles can lead to viscosity. At late times, this v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3e0d6d966fbd40a9cf0524c339aabe3
https://doi.org/10.1007/978-981-33-4408-2_43
https://doi.org/10.1007/978-981-33-4408-2_43
Autor:
Abhishek Atreya
Publikováno v:
Proceedings of 7th International Conference on Physics and Astrophysics of Quark Gluon Plasma — PoS(ICPAQGP2015).
We discuss a novel mechanism for segregation of baryons and anti-baryons in the quark-gluon plasma phase which can lead to formation of quark and antiquark nuggets in the early universe, irrespective of the order of the quark-hadron phase transition.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd5d32e6f270449837318e6da0c15404
https://doi.org/10.22323/1.242.0039
https://doi.org/10.22323/1.242.0039
Self interacting dark matter (SIDM) provides us with a consistent solution to certain astrophysical observations in conflict with collision-less cold DM paradigm. In this work we estimate the shear viscosity $(\eta)$ and bulk viscosity $(\zeta)$ of S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0c2b906e505ee32b6caffbcc56661f0
http://arxiv.org/abs/1709.02163
http://arxiv.org/abs/1709.02163
Publikováno v:
Journal of Cosmology and Astroparticle Physics. 2019:045-045
The viscosity of dark matter in cosmological models may cause an accelerated expansion and when this effect is sufficiently large, it can explain the dark energy. In this work, attributing the origin of viscosity to self-interaction of dark matter, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6689c9d8d3cfc90e362a310ba22aaa4
https://doi.org/10.1088/1475-7516/2019/02/045
https://doi.org/10.1088/1475-7516/2019/02/045
Publikováno v:
Proceedings of Indian National Science Academy, Vol 81, Iss 1 (2015)
We investigate the possibility of segregation of baryons and anti-baryons in the quark-gluon plasma phase in the early universe due to CP violating scattering of quarks and antiquarks from moving Z(3) domain walls. CP violation here is spontaneous in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fb90a0f54efc1409a7ba36d7d886737
https://insa.nic.in/writereaddata/UpLoadedFiles/PINSA/Vol81_2015_1_Art35.pdf
https://insa.nic.in/writereaddata/UpLoadedFiles/PINSA/Vol81_2015_1_Art35.pdf
Autor:
Abhishek Atreya
Publikováno v:
Proceedings of Indian National Science Academy, Vol 81, Iss 1 (2015)
A Novel Mechanism for J/psi Disintegration in Relativistic Heavy Ion Collisions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5e1ac3b60847af4a11972438a4304a7
https://insa.nic.in/writereaddata/UpLoadedFiles/PINSA/Vol81_2015_1_Art29.pdf
https://insa.nic.in/writereaddata/UpLoadedFiles/PINSA/Vol81_2015_1_Art29.pdf
Publikováno v:
Physical Review D. 90
In this paper, we extend our earlier study of spontaneous CP violating scattering of quarks and anti-quarks from QCD $Z\left(3\right)$ domain walls for the situation when these walls have asymmetric profiles of the Polyakov loop order parameter $l(x)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::440cab41d5c78c9460c46a72c6479997
https://doi.org/10.1103/physrevd.90.125016
https://doi.org/10.1103/physrevd.90.125016
Publikováno v:
Physical Review C. 90
In this paper we discuss the possibility of $J/\psi$ disintegration due the $Z(3)$ domain walls that are expected to form in QGP medium. These domain walls give rise to localised color electric field which disintegrates $J/\psi$, on interaction, by c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::251a3871b385569e8963688894b7585c
https://doi.org/10.1103/physrevc.90.034912
https://doi.org/10.1103/physrevc.90.034912
Publikováno v:
Physical Review D. 90
We discuss a novel mechanism for segregation of baryons and anti-baryons in the quark-gluon plasma phase which can lead to formation of quark and antiquark nuggets in the early universe, irrespective of the order of the quark-hadron phase transition.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::951a3ac6a5f1ecf6effec22d06220441
https://doi.org/10.1103/physrevd.90.045010
https://doi.org/10.1103/physrevd.90.045010