Zobrazeno 1 - 10
of 99
pro vyhledávání: '"L. C. R. Wijewardhana"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 4, Pp 1-17 (2024)
Abstract We investigate the dynamics of a multifield dark energy model, which arises from certain rapid-turning and inspiraling trajectories in field space. We find the speed of sound $$c_s$$ c s of the dark energy perturbations around the background
Externí odkaz:
https://doaj.org/article/f84371692c644fee910058ebdffe2a4b
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 1, Pp 1-23 (2018)
Abstract Axion particles can form macroscopic condensates, whose size can be galactic in scale for models with very small axion masses m ∼ 10−22 eV, and which are sometimes referred to under the name of Fuzzy Dark Matter. Many analyses of these c
Externí odkaz:
https://doaj.org/article/10dfa19d28df4accae5cf657fd9447aa
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 4, Pp 1-24 (2017)
Abstract If QCD axions form a large fraction of the total mass of dark matter, then axion stars could be very abundant in galaxies. As a result, collisions with each other, and with other astrophysical bodies, can occur. We calculate the rate and ana
Externí odkaz:
https://doaj.org/article/036e05c12384470cafd159f119ae7421
Publikováno v:
Peter Suranyi 87th Birthday Festschrift ISBN: 9789811262340
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77a8432e0501b094cfc6fdc0460995ea
https://doi.org/10.1142/9789811262357_0011
https://doi.org/10.1142/9789811262357_0011
Publikováno v:
Physical Review D. 106
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::913e782324b533ab1a92038151c02220
https://doi.org/10.1103/physrevd.106.043007
https://doi.org/10.1103/physrevd.106.043007
Publikováno v:
Physical Review
It is possible that bosonic dark matter forms halos around the Sun or the Earth. We discuss the possibility of probing such halos with atomic clocks. Focusing on either a Higgs portal or photon portal interaction between the dark matter and the Stand
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be5fd2062283ec6b119dc1b50dc952e9
http://arxiv.org/abs/2106.06023
http://arxiv.org/abs/2106.06023
Publikováno v:
Physical Review
We explore a weakly coupled $SU(N_{c})$ gauge theory, examining its fixed-point structure and the transition from infrared conformality to spontaneous symmetry breaking. Following a previous study, we couple the gauge field to $N_s$ scalars and $N_f$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f2f1a3cb9603c9eaa821c6693be2078
Autor:
L. C. R. Wijewardhana
Publikováno v:
Roman Jackiw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::618b7bcccd105d62e6e35e1182ae892c
https://doi.org/10.1142/9789811210679_0012
https://doi.org/10.1142/9789811210679_0012
Ultralight scalar dark matter has been proposed to constitute a component of dark matter, though the minimal scenarios have increasingly become constrained. In this work, we analyze scenarios where the dark matter consists of more than one ultralight
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fce8d0baa36a168bb590483cf0e4ce3
Publikováno v:
Physics of Atomic Nuclei. 80:808-813
We review our recent work on gravitationally bound condensates formed by Hermitian bosons interacting with a potential energy Λ4[1 − cos(A/f)]. We have used an expansion method to simplify the equations of motion. The expansion parameters are the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc269b5146b3fa817437c3ef95e37fac
https://doi.org/10.1134/s1063778817040093
https://doi.org/10.1134/s1063778817040093