Results 1 to 10 of about 20,964 (97)

Cosmology in beyond-generalized Proca theories

Physical Review D, 2017
The beyond-generalized Proca theories are the extension of second-order massive vector-tensor theories (dubbed generalized Proca theories) with two transverse vector modes and one longitudinal scalar besides two tensor polarizations.
Ryotaro Kase, Shinji Tsujikawa
exaly   +3 more sources

On chirality of the vorticity of the Universe [PDF]

, 2012
We study chirality of the vorticity of the Universe within the Einstein-Cartan cosmology. The role of the spin of fermion species during the evolution of the Universe is studied by averaged spin densities and Einstein-Cartan equations.
Palle, Davor
core   +3 more sources

Non-Abelian Einstein-Born-Infeld-Dilaton Cosmology [PDF]

, 2005
The non-abelian Einstein-Born-Infeld-Dilaton theory, which rules the dynamics of tensor-scalar gravitation coupled to a $su(2)$-valued gauge field ruled by Born-Infeld lagrangian, is studied in a cosmological framework.
Alimi, J. -M., Fuzfa, A.
core   +7 more sources

Monochromatic Gamma Rays from Dark Matter Annihilation to Leptons [PDF]

, 2015
We investigate the relation between the annihilation of dark matter (DM) particles into lepton pairs and into 2-body final states including one or two photons.
Coogan, Adam, Profumo, Stefano, Shepherd, William   +2 more
core   +2 more sources

Particle Physics and Cosmology

, 2014
Today, both particle physics and cosmology are described by few parameter Standard Models, i.e. it is possible to deduce consequence of particle physics in cosmology and vice verse.
Pralavorio, P.
core   +1 more source

Holography and Brane-bulk Energy Exchange

, 2005
The five-dimensional description of generalized Randall-Sundrum cosmology is mapped via holography to a generalization of the Starobinsky model. This provides a holographic dual description of the cosmological brane-bulk energy exchange processes studied
Alexander S H S, Apostolopoulos P S, Apostolopoulos P S Brouzakis N Saridakis E N Tetradis N, Arkani-Hamed N, Banks T Douglas M R Horowitz G T Martinec E J, Bianchi M, Bianchi M, Birrell N D, Brandhuber A, Brax P, Brax P van de Bruck C Davis A C, Burgess C P, Charmousis C, Csaki C, Danielsson U H, Das S R, de Haro S, Duff M J, Dvali G R Shafi Q Solganik S, Elias Kiritsis, Fefferman C, Freedman D Z, Gabadadze G, Gregory J P, Henningson M, Kehagias A, Kiritsis E, Kiritsis E, Kiritsis E, Kiritsis E, Kiritsis E, Klebanov I R, Kraus P, Leeper E, Maartens R, Maldacena J, Maldacena J M, Nojiri S, Papadimitriou I, Papadimitriou I Skenderis K, Quevedo F, Silverstein E, Sundrum R, Tetradis N, Tomaras T N, Trodden M Carroll S M, Verlinde H, Witten E, Witten E, Zee A, ’t Hooft G   +50 more
core   +2 more sources

New Light Species and the CMB

, 2013
We consider the effects of new light species on the Cosmic Microwave Background. In the massless limit, these effects can be parameterized in terms of a single number, the relativistic degrees of freedom.
Brust, Christopher, Kaplan, David E., Walters, Matthew T.   +2 more
core   +1 more source

Dark Matter from Minimal Flavor Violation

, 2011
We consider theories of flavored dark matter, in which the dark matter particle is part of a multiplet transforming nontrivially under the flavor group of the Standard Model in a manner consistent with the principle of Minimal Flavor Violation (MFV). MFV
A Adulpravitchai, A Belyaev, A Falkowski, A Katz, A Lenz, AI Vainshtein, AJ Buras, AJ Buras, AL Kagan, AV Manohar, B Batell, B Batell, B Bellazzini, B Grinstein, Brian Batell, C-R Chen, CP Burgess, CW Bauer, D Meloni, DE Soper, DL Rainwater, E Gross, E Komatsu, E Ma, E Nikolidakis, F Chen, F D’Eramo, G Bertone, G D’Ambrosio, G Jungman, GD Kribs, GD Kribs, J Alwall, J Gallicchio, J Goodman, J Goodman, J March-Russell, J McDonald, J-H Kim, JM Arnold, JM Arnold, JM Butterworth, JM Campbell, JM Campbell, Josef Pradler, JR Ellis, K Agashe, LJ Hall, M Bahr, M Beltrán, M Blennow, M Cacciari, M Cacciari, M Carena, M Cirelli, M Hirsch, M Lisanti, M Trott, MA Shifman, Michael Spannowsky, MS Boucenna, N Haba, N Kauer, P Sorensen, RS Chivukula, S Chang, S Chang, S Yellin, T Aaltonen, T Aaltonen, T Hambye, T Plehn, T Sjöstrand, TR Slatyer, V Cirigliano, V Silveira, VM Abazov, VM Abazov, Y Bai, Y Grossman, Y Kajiyama, Z Ligeti, Z Ligeti   +82 more
core   +1 more source

Fifth forces and discrete symmetry breaking [PDF]

, 1954
Modifications of general relativity often involve coupling additional scalar fields to the Ricci scalar, leading to scalar-tensor theories of Brans-Dicke type.
Millington, Peter
core   +6 more sources

Primordial Neutrinos: Hot in SM-GR-$\Lambda$-CDM, Cold in SM-LGT

, 2018
We replace general relativity (GR) and the cosmological constant ($\Lambda$) in the standard cosmology (SM-GR-$\Lambda$-CDM) with a Lorentz gauge theory of gravity (LGT) and show that the standard model (SM) neutrinos can be the cold dark matter (CDM ...
Borzou, Ahmad
core   +1 more source