TY - JOUR

T1 - String tension between de Sitter vacua and curvature corrections

AU - Basile, Ivano

AU - Platania, Alessia

N1 - Funding Information: The authors would like to thank A. Bonanno, A. Eichhorn, B. Knorr, A. Sagnotti, and F. Saueressig for discussions. A. P. acknowledges support by Perimeter Institute for Theoretical Physics. Research at Perimeter Institute is supported in part by the Government of Canada through the Department of Innovation, Science and Economic Development Canada and by the Province of Ontario through the Ministry of Colleges and Universities. The work of I. B. was supported by the Fonds de la Recherche Scientifique—FNRS under Grants No. F.4503.20 (“HighSpinSymm”) and No. T.0022.19 (“Fundamental issues in extended gravitational theories”). Publisher Copyright: © 2021 authors. Published by the American Physical Society.

PY - 2021/12/15

Y1 - 2021/12/15

N2 - Higher-derivative corrections to cosmological effective actions in string theory are largely constrained by T-duality, but have been computed hitherto only to the first few orders in the string scale α′. The functional renormalization group, in conjunction with the strong constraints imposed by T-duality, allows us to derive cosmological effective actions to all orders in α′ while avoiding "truncations"of the theory space. We show that the resulting higher-derivative α′-corrections forbid the existence of de Sitter vacua, at least in regimes where string-loop corrections can be neglected. Our findings thus support the no-de Sitter swampland conjecture in the presence of all-order effects in α′.

AB - Higher-derivative corrections to cosmological effective actions in string theory are largely constrained by T-duality, but have been computed hitherto only to the first few orders in the string scale α′. The functional renormalization group, in conjunction with the strong constraints imposed by T-duality, allows us to derive cosmological effective actions to all orders in α′ while avoiding "truncations"of the theory space. We show that the resulting higher-derivative α′-corrections forbid the existence of de Sitter vacua, at least in regimes where string-loop corrections can be neglected. Our findings thus support the no-de Sitter swampland conjecture in the presence of all-order effects in α′.

UR - http://www.scopus.com/inward/record.url?scp=85122155609&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.104.L121901

DO - 10.1103/PhysRevD.104.L121901

M3 - Journal article

AN - SCOPUS:85122155609

VL - 104

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 12

M1 - L121901

ER -