2020-02-27
04:40 |
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2020-02-21
04:32 |
Chaotic inflation with four-form couplings
/ Lee, Hyun Min (Chung-Ang U.)
We consider chaotic inflation models with a pseudo-scalar field containing the general couplings to the four-form flux. The four-form mixing with the pseudo-scalar field induces a quadratic potential for inflaton while the coexisting four-form mixing with graviton generates a non-minimal gravity coupling for inflaton. [...]
arXiv:1908.05475; CERN-TH-2019-228.-
2020-02-20 - 6 p.
- Published in : Phys. Rev. D 101 (2020) 043523
Article from SCOAP3: PDF; Fulltext: PDF;
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2020-02-21
04:32 |
Relaxation of Higgs mass and cosmological constant with four-form fluxes and reheating
/ Lee, Hyun Min (Chung-Ang U.)
We consider the most general effective action for the four-form fluxes in the Standard Model coupled to gravity. The Higgs mass parameter can be relaxed to a correct value due to the four-form coupling to the Higgs field and it stops changing due to an extremely suppressed transition probability from the observed cosmological constant to AdS space. [...]
arXiv:1908.04252; CERN-PH-TH/2019-196; CERN-TH-2019-196.-
2020-01-08 - 14 p.
- Published in : JHEP 2001 (2020) 045
Article from SCOAP3: PDF; Fulltext: PDF;
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2020-01-09
04:55 |
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2020-01-07
04:04 |
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2020-01-04
05:03 |
Electroweak baryogenesis at high wall velocities
/ Cline, James M. (McGill U.) ; Kainulainen, Kimmo (Jyvaskyla U. ; Helsinki Inst. of Phys. ; CERN)
It is widely believed that electroweak baryogenesis should be suppressed in strong phase transitions with fast-moving bubble walls, but this effect has never been quantitatively studied. We rederive fluid equations describing transport of particle asymmetries near the bubble wall without making the small-wall-velocity approximation. [...]
arXiv:2001.00568; CERN-TH-2019-227.-
2020-03-20 - 16 p.
- Published in : Phys. Rev. D 101 (2020) 063525
Fulltext: PDF; Fulltext from publisher: PDF;
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2019-12-18
04:45 |
Primordial backgrounds of relic gravitons
/ Giovannini, Massimo (CERN ; INFN, Milan Bicocca)
The diffuse backgrounds of relic gravitons with frequencies ranging between the aHz band and the GHz region encode the ultimate information on the primeval evolution of the plasma and on the underlying theory of gravity well before the electroweak epoch. While the temperature and polarization anisotropies of the microwave background radiation probe the low-frequency tail of the graviton spectra, during the next score year the pulsar timing arrays and the wide-band interferometers (both terrestrial and hopefully space-borne) will explore a much larger frequency window encompassing the nHz domain and the audio band. [...]
arXiv:1912.07065; CERN-TH-2019-166.-
2020-03-04 - 148 p.
- Published in : 10.1016/j.ppnp.2020.103774
Fulltext: PDF; Fulltext from publisher: PDF;
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2019-12-17
04:15 |
de Sitter Conjectures in N=1 Supergravity
/ Ferrara, Sergio (CERN ; INFN, Milan Bicocca) ; Tournoy, Magnus (Leuven U.) ; Van Proeyen, Antoine (Leuven U.)
Supergravity theories at D=4 allow to formulate the Swampland de Sitter conjectures in the complex field space of scalar components of chiral multiplets. We formulate the de Sitter and refined de Sitter conjecture by using the K\"ahler invariant ${\cal G}$-function and explore a class of models in the Landscape/Swampland scenario which obey and/or violate such conjectures. [...]
arXiv:1912.06626; CERN-TH-2019-220.-
2020-02-01 - 18 p.
- Published in : Fortschr. Phys. 68 (2020) 1900107
Fulltext: PDF;
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2019-12-17
04:15 |
Diagrammatic Coaction of Two-Loop Feynman Integrals
/ Abreu, Samuel (Louvain U., CP3) ; Britto, Ruth (Hamilton Math. Inst., Dublin ; Trinity Coll., Dublin ; IPhT, Saclay) ; Duhr, Claude (CERN) ; Gardi, Einan (U. Edinburgh, Higgs Ctr. Theor. Phys. ; Edinburgh U., Inst. Astron.) ; Matthew, James (U. Edinburgh, Higgs Ctr. Theor. Phys.)
It is known that one-loop Feynman integrals possess an algebraic structure encoding some of their analytic properties called the coaction, which can be written in terms of Feynman integrals and their cuts. This diagrammatic coaction, and the coaction on other classes of integrals such as hypergeometric functions, may be expressed using suitable bases of differential forms and integration contours. [...]
arXiv:1912.06561; CERN-TH-2019-218; CP3-19-59.-
2020 - 10 p.
- Published in : PoS RADCOR2019 (2019) 065
Fulltext: PoS(RADCOR2019)065 - PDF; 1912.06561 - PDF;
In : 14th International Symposium on Radiative Corrections : Application of Quantum Field Theory to Phenomenology, Avignon, France, 8 - 13 Sep 2019, pp.065
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2019-12-17
04:14 |
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