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1401
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1402por Lee, Sung Mook, Kang, Dong Woo, Gong, Jinn-Ouk, Jeong, Donghui, Jung, Dong-Won, Park, Seong ChanMaterias: “…General Relativity and Cosmology…”
Publicado 2023
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1403
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1404por Mangiagli, Alberto, Caprini, Chiara, Volonteri, Marta, Marsat, Sylvain, Vergani, Susanna, Tamanini, Nicola, Speri, Lorenzo“…We combine state-of-the-art models for the galaxy formation and evolution, realistic modeling of the EM counterpart and Bayesian tools to perform the parameter estimation of the GW event as well as of the cosmological parameters. We explore three different astrophysical scenarios employing different seed formation (light or heavy seeds) and delay-time models, in order to have realistic predictions on the expected number of events. …”
Publicado 2022
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1405
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1406por Tsai, Yu-Dai“…We discuss two scenarios of millicharge particles (mCPs), with or without kinetic mixing, as they have different theoretical motivations and cosmological signatures. The mCP without an accompanying dark photon can be an indirect test of GUTs and string compactifications, and we discuss its overproduction and CMB constraints with different reheating temperatures as an attempt to identify a region to search for it. …”
Publicado 2023
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1407
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1408
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1409
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1410
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1411“…Using general arguments we determine the allowed region for the end point frequency and the peak energy density of the stochastic background of gravity waves expected in string cosmology. We provide an accurate estimate of the minimal experimental sensitivity required to detect a signal in the Hz to GHz range.…”
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1412
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1413“…We discuss general features of the $\beta$-function equations for spatially flat, $(d+1)$-dimensional cosmological backgrounds at lowest order in the string-loop expansion, but to all orders in $\alpha'$. …”
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1414
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1415
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1416
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1417“…A significant lower limit on the mass of the lightest neutralino \chi can be obtained by combining the results from sparticle searches at LEP at centre-of-mass energies up to 172 GeV with cosmological considerations, if it is assumed that the \chi is stable. …”
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Enlace del recurso
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1418por Krauss, Lawrence M.“…For the first time, the allowed parameter space for the density of non-relativistic matter appears larger for an open universe than for a flat universe with cosmological constant, while a flat universe with zero cosmological constant remains strongly disfavored. …”
Publicado 1997
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Enlace del recurso
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1419
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1420“…However, using flavour and CP-violating constraints on the third sfermion generation, together with the decoupling of the first two generations, can dramatically affect cosmological predictions such as the relic abundance of stable particles. …”
Enlace del recurso
Enlace del recurso