Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Chun, Eung Jin"'
Autor:
Chun, Eung Jin, Park, Jong-Chul
Publikováno v:
JCAP 0902:026,2009
Motivated by the recent PAMELA and ATIC data, one is led to a scenario with heavy vector-like dark matter in association with a hidden $U(1)_X$ sector below GeV scale. Realizing this idea in the context of gauge mediated supersymmetry breaking (GMSB)
Externí odkaz:
http://arxiv.org/abs/0812.0308
Publikováno v:
JHEP0803:061,2008
If the spontaneous breaking of Peccei-Quinn symmetry comes from soft supersymmetry breaking, the fermionic partners of the symmetry-breaking fields have mass of order the gravitino mass, and are called flatinos. The lightest flatino, called here the
Externí odkaz:
http://arxiv.org/abs/0801.4108
Autor:
Chun, Eung Jin, Scopel, Stefano
Publikováno v:
JCAP 0710:011,2007
Thermal leptogenesis induced by the CP-violating decay of a right-handed neutrino (RHN) is discussed in the background of quintessential kination, i.e., in a cosmological model where the energy density of the early Universe is assumed to be dominated
Externí odkaz:
http://arxiv.org/abs/0707.1544
Autor:
Chun, Eung Jin, Kim, Hang Bae
Publikováno v:
JHEP0610:082,2006
Motivated by the recent observation of the 511 keV $\gamma$-ray line emissions from the galactic bulge and an explanation for it by the decays of light dark matter particles, we consider the light axino whose mass can be in the 1-10 MeV range, partic
Externí odkaz:
http://arxiv.org/abs/hep-ph/0607076
Publikováno v:
Phys.Rev.D74:126001,2006
We analyze homogeneous anisotropic cosmology driven by the dilaton and the self-interacting ``massive'' antisymmetric tensor field which are indispensable bosonic degrees with the graviton in the NS-NS sector of string theories with D-branes. We foun
Externí odkaz:
http://arxiv.org/abs/hep-th/0603174
Publikováno v:
J.KoreanPhys.Soc.49:779-786,2006
We discuss the cosmological implications of an antisymmetric tensor field when it experiences a kind of ``Higgs mechanism,'' including nonlocal interaction terms, on D-branes. Even when a huge magnetic-condensation-inducing anisotropy is assumed in t
Externí odkaz:
http://arxiv.org/abs/hep-ph/0601147
Publikováno v:
JHEP0503:036,2005
We analyze homogeneous, anisotropic cosmology driven by a self-interacting ``massive'' antisymmetric tensor field $B_{\mu\nu}$ which is present in string theories with D-branes. Time-dependent magnetic $B$ field existing in the early universe can lea
Externí odkaz:
http://arxiv.org/abs/hep-ph/0502051
Publikováno v:
Phys.Rev. D70 (2004) 103510
A pseudo Nambu-Goldstone boson as curvaton avoids the eta-problem of inflation which plagues most curvaton candidates. We point out that a concrete realization of the curvaton mechanism with a pseudo Nambu-Goldstone boson can be found in the supersym
Externí odkaz:
http://arxiv.org/abs/hep-ph/0402059
Publikováno v:
Phys. Rev. D 58, 046003 (1998)
In string/M-theory with a large compactification radius, some axion-like moduli can be much lighter than the gravitino. Generic moduli in gauge-mediated supersymmetry breaking models also have a mass far below the weak scale. Motivated by these, we e
Externí odkaz:
http://arxiv.org/abs/hep-ph/9801280