scholarly journals One-loop effective action and Schwinger effect in (anti-) de Sitter space

2014 ◽  
Vol 2014 (9) ◽  
Author(s):  
Rong-Gen Cai ◽  
Sang Pyo Kim
Keyword(s):  
Effective Action ◽  
De Sitter Space ◽  
De Sitter ◽  
Schwinger Effect

scholarly journals One-loop effective action around De Sitter space

1996 ◽  
Vol 462 (2-3) ◽  
pp. 437-452 ◽  
Author(s):  
I. Antoniadis ◽  
J. Iliopoulos ◽  
T.N. Tomaras
Keyword(s):  
Effective Action ◽  
De Sitter Space ◽  
De Sitter

scholarly journals De Sitter entropy as holographic entanglement entropy

2021 ◽  
Author(s):  
Nikolaos Tetradis
Keyword(s):  
Effective Action ◽  
Degrees Of Freedom ◽  
Entanglement Entropy ◽  
De Sitter Space ◽  
Conformal Anomaly ◽  
Dual Theory ◽  
De Sitter ◽  
Logarithmic Corrections ◽  
Holographic Entanglement Entropy ◽  
Gravitational Entropy

We review the results of refs. [1,2], in which the entanglement entropy in spaces with horizons, such as Rindler or de Sitter space, is computed using holography. This is achieved through an appropriate slicing of anti-de Sitter space and the implementation of a UV cutoff. When the entangling surface coincides with the horizon of the boundary metric, the entanglement entropy can be identified with the standard gravitational entropy of the space. For this to hold, the effective Newton's constant must be defined appropriately by absorbing the UV cutoff. Conversely, the UV cutoff can be expressed in terms of the effective Planck mass and the number of degrees of freedom of the dual theory. For de Sitter space, the entropy is equal to the Wald entropy for an effective action that includes the higher-curvature terms associated with the conformal anomaly. The entanglement entropy takes the expected form of the de Sitter entropy, including logarithmic corrections.

scholarly journals REAL OR IMAGINARY? ON PAIR CREATION IN DE SITTER SPACE

2010 ◽  
Vol 25 (33) ◽  
pp. 2815-2823 ◽  
Author(s):  
EMIL T. AKHMEDOV
Keyword(s):  
Scalar Field ◽  
Path Integral ◽  
Effective Action ◽  
Particle Production ◽  
De Sitter Space ◽  
Pair Creation ◽  
De Sitter ◽  
Feynman Propagator

Using properly defined Feynman propagator we obtain nonzero imaginary contribution to the scalar field effective action in even-dimensional de Sitter space. Such a propagator follows from the path integral in de Sitter space and obeys composition principle proposed in arXiv:0709.2899. The obtained expression for the effective action shows particle production with the Gibbons–Hawking rate.

scholarly journals One-loop effective action for non-local modified Gauss–Bonnet gravity in de Sitter space

2009 ◽  
Vol 64 (3) ◽  
Author(s):  
Guido Cognola ◽  
Emilio Elizalde ◽  
Shin’ichi Nojiri ◽  
Sergei D. Odintsov ◽  
Sergio Zerbini
Keyword(s):  
Effective Action ◽  
De Sitter Space ◽  
De Sitter ◽  
Bonnet Gravity ◽  
Non Local

scholarly journals Multifaceted Schwinger effect in de Sitter space

2017 ◽  
Vol 96 (2) ◽  
Author(s):  
Ramkishor Sharma ◽  
Suprit Singh
Keyword(s):  
De Sitter Space ◽  
De Sitter ◽  
Schwinger Effect

scholarly journals Holographic Schwinger effect in de Sitter space

2015 ◽  
Vol 91 (8) ◽  
Author(s):  
Willy Fischler ◽  
Phuc H. Nguyen ◽  
Juan F. Pedraza ◽  
Walter Tangarife
Keyword(s):  
De Sitter Space ◽  
De Sitter ◽  
Schwinger Effect

scholarly journals Schwinger effect in de Sitter space

2014 ◽  
Vol 2014 (04) ◽  
pp. 009-009 ◽  
Author(s):  
Markus B. Fröb ◽  
Jaume Garriga ◽  
Sugumi Kanno ◽  
Misao Sasaki ◽  
Jiro Soda ◽  
...  
Keyword(s):  
De Sitter Space ◽  
De Sitter ◽  
Schwinger Effect

scholarly journals Fermionic Schwinger effect and induced current in de Sitter space

2016 ◽  
Vol 2016 (07) ◽  
pp. 010-010 ◽  
Author(s):  
Takahiro Hayashinaka ◽  
Tomohiro Fujita ◽  
Jun'ichi Yokoyama
Keyword(s):  
De Sitter Space ◽  
Induced Current ◽  
De Sitter ◽  
Schwinger Effect
Sign in / Sign up

Export Citation Format

Share Document