Zobrazeno 1 - 10 of 74 pro vyhledávání: '"Cédric Deffayet"'
1
Akademický článek
Stable vacua with realistic phenomenology and cosmology in heterotic M-theory satisfying Swampland conjectures
Autor: Cédric Deffayet, Burt A. Ovrut, Paul J. Steinhardt
Publikováno v: Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-30 (2024)
Abstract We recently described a protocol for computing the potential energy in heterotic M-theory for the dilaton, complex structure and Kähler moduli. This included the leading order non-perturbative contributions to the complex structure, gaugino
Externí odkaz: https://doaj.org/article/9159c3d67493490ab2636220a3229097
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2
Akademický článek
Consistent deformations of free massive field theories in the Stueckelberg formulation
Autor: Nicolas Boulanger, Cédric Deffayet, Sebastian Garcia-Saenz, Lucas Traina
Publikováno v: Journal of High Energy Physics, Vol 2018, Iss 7, Pp 1-34 (2018)
Abstract Cohomological techniques within the Batalin-Vilkovisky (BV) extension of the Becchi-Rouet-Stora-Tyutin (BRST) formalism have proved invaluable for classifying consistent deformations of gauge theories. In this work we investigate the applica
Externí odkaz: https://doaj.org/article/31ef4c9b297f46df9e446bacc1956e4d
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4
Ghosts without Runaway Instabilities
Autor: Cédric Deffayet, Shinji Mukohyama, Alexander Vikman
Publikováno v: Physical Review Letters. 128
We present a simple class of mechanical models where a canonical degree of freedom interacts with another one with a negative kinetic term, i.e., with a ghost. We prove analytically that the classical motion of the system is completely stable for all
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4a7fc1c3639f360e58e3c3303b1b720
https://doi.org/10.1103/physrevlett.128.041301
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5
Coupling to Matter in Degenerate Scalar-Tensor Theories
Autor: Cédric Deffayet, Sebastian Garcia-Saenz
Publikováno v: Physical Sciences Forum
Physical Sciences Forum, 2021, 2 (1), pp.46. ⟨10.3390/ECU2021-09309⟩
International audience; Scalar-tensor theories of gravity provide an intriguing and compelling approach to the dark energy problem. They have received increased attention in recent years thanks to a wealth of developments both in the theoretical and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9726819e878c705f9dfa280e44b306a1
https://doi.org/10.3390/ecu2021-09309
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6
Domain walls without a potential
Autor: François Larrouturou, Cédric Deffayet
Publikováno v: Physical Review
Physical Review D
Physical Review D, American Physical Society, 2021, 103 (3), pp.036010. ⟨10.1103/PhysRevD.103.036010⟩
We show that domain walls, or kinks, can be constructed in simple scalar theories where the scalar has no potential. These theories belong to a class of k-essence where the Lagrangian vanishes identically when one lets the derivatives of the scalar v
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd7154286604b9ba23d4381be39ef693
http://arxiv.org/abs/2009.00404
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7
Degeneracy, matter coupling, and disformal transformations in scalar-tensor theories
Autor: Cédric Deffayet, Sebastian Garcia-Saenz
Publikováno v: Physical Review D
Physical Review D, American Physical Society, 2020, 102 (6), pp.064037. ⟨10.1103/PhysRevD.102.064037⟩
Physical Review
Degenerate scalar-tensor theories of gravity extend general relativity by a single degree of freedom, despite their equations of motion being higher than second order. In some cases, this is a mere consequence of a disformal field redefinition carrie
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca22ce2562993e96c7f0e1ff0f390f7d
http://arxiv.org/abs/2004.11619
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8
A theory for multiple partially massless spin-2 fields
Autor: Cédric Deffayet, Nicolas Boulanger, Sebastian Garcia-Saenz, Lucas Traina
Publikováno v: PoS
19th Hellenic School and Workshops on Elementary Particle Physics and Gravity
19th Hellenic School and Workshops on Elementary Particle Physics and Gravity, Aug 2019, Corfu, Greece. pp.142, ⟨10.22323/1.376.0142⟩
Physical Review
Physical Review D
Physical Review D, American Physical Society, 2019, 100 (10), pp.101701. ⟨10.1103/PhysRevD.100.101701⟩
Phys.Rev.D
Phys.Rev.D, 2019, 100 (10), pp.101701. ⟨10.1103/PhysRevD.100.101701⟩
We revisit the problem of building consistent interactions for a multiplet of partially massless spin-2 fields in (anti-)de Sitter space. After rederiving and strengthening the existing no-go result on the impossibility of Yang-Mills type non-abelian
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d3486a597643f6ce3abb6915a0d803c
https://hal.archives-ouvertes.fr/hal-02934059
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10
Consistent deformations of free massive field theories in the Stueckelberg formulation
Autor: Sebastian Garcia-Saenz, Lucas Traina, Cédric Deffayet, Nicolas Boulanger
Publikováno v: JHEP
JHEP, 2018, 07, pp.021. ⟨10.1007/JHEP07(2018)021⟩
Journal of High Energy Physics, Vol 2018, Iss 7, Pp 1-34 (2018)
Journal of High Energy Physics
Cohomological techniques within the Batalin-Vilkovisky (BV) extension of the Becchi-Rouet-Stora-Tyutin (BRST) formalism have proved invaluable for classifying consistent deformations of gauge theories. In this work we investigate the application of t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::498d2b32e3c77a210f50ca754e7573c8
https://hal.archives-ouvertes.fr/hal-01827994
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