Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Matti Herranen"'
Autor:
Simon Caron-Huot, Matti Herranen
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 2, Pp 1-42 (2018)
Abstract The Balitsky-Kovchegov equation describes the high-energy growth of gauge theory scattering amplitudes as well as nonlinear saturation effects which stop it. We obtain the three-loop corrections to the equation in planar N $$ \mathcal{N} $$
Externí odkaz:
https://doaj.org/article/b77c25be75944e94b34d190018fcc9e5
We demonstrate the importance of correctly implementing RG running and choosing the RG scale when calculating quantum corrections to inflaton dynamics. We show that such corrections are negligible for single-field inflation, in the sense of not alter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a131d8e24ad5d54b626e92be1e228c89
http://arxiv.org/abs/1608.08906
http://arxiv.org/abs/1608.08906
Autor:
Björn Garbrecht, Matti Herranen
Publikováno v:
Nuclear Physics B. 861:17-52
We describe mixing scalar particles and Majorana fermions using Closed-Time-Path methods. From the Kadanoff-Baym equations, we obtain the charge asymmetry, that is generated from decays and inverse decays of the mixing particles. Within one single fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12da0b00fe4b61093cc599b8692db7e6
https://doi.org/10.1016/j.nuclphysb.2012.03.009
https://doi.org/10.1016/j.nuclphysb.2012.03.009
Publikováno v:
Nuclear Physics B. 843:177-212
Within the Closed Time Path (CTP) framework, we derive kinetic equations for particle distribution functions that describe leptogenesis in the presence of several lepton flavours. These flavours have different Standard-Model Yukawa couplings, which i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb75cd5a45b0fb1cc023075209bfeb44
https://doi.org/10.1016/j.nuclphysb.2010.10.001
https://doi.org/10.1016/j.nuclphysb.2010.10.001
Publikováno v:
Physical Review Letters
We investigate the dynamics of the Higgs field at the end of inflation in the minimal scenario consisting of an inflaton field coupled to the Standard Model only through the non-minimal gravitational coupling $\xi$ of the Higgs field. Such a coupling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08f4e659e1ac5b2bfa6deb97449416fd
http://arxiv.org/abs/1506.04065
http://arxiv.org/abs/1506.04065
Computations of quantum corrections to the CMB spectrum and to scalar field dynamics during inflation very often take advantage of the "semi-classical" approach, where the metric fluctuations are simply omitted. On the other hand, a complete computat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f29693079005ac23d5d28297838d5ee9
It has been claimed that the electroweak vacuum may be unstable during inflation due to large fluctuations of order $H$ in case of a high inflationary scale as suggested by BICEP2. We compute the Standard Model Higgs effective potential including UV-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13009d25f666ee81a01d005d4fb7c216
http://hdl.handle.net/10044/1/65368
http://hdl.handle.net/10044/1/65368
Publikováno v:
Journal of High Energy Physics
We consider the dynamics of a quantum scalar field in the background of a slow-roll inflating Universe. We compute the one-loop quantum corrections to the field and Friedmann equation of motion, in both a 1PI and a 2PI expansion, to leading order in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ddf81fc5330eff84cc2689e76d5dc5f
http://repo.scoap3.org/api
http://repo.scoap3.org/api
The production and decay rate of massive sterile neutrinos at finite temperature receives next-to-leading order corrections from the gauge interactions of lepton and Higgs doublets. Using the Closed-Time-Path approach, we demonstrate that the perturb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10e1b663f0e279b7ff2f33345ec3e922
http://arxiv.org/abs/1302.0743
http://arxiv.org/abs/1302.0743
Publikováno v:
Journal of High Energy Physics. 2012
We present a simplified and generalized derivation of the flavour-coherent propagators and Feynman rules for the fermionic kinetic theory based on coherent quasiparticle approximation (cQPA). The new formulation immediately reveals the composite natu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::934bec1ea1539f82915df145f37ab294
https://doi.org/10.1007/jhep02(2012)080
https://doi.org/10.1007/jhep02(2012)080