2020-11-13 17:36 |
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2020-10-21 04:31 |
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2020-09-24 04:09 |
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2020-09-23 04:37 |
Knitting Wormholes by Entanglement in Supergravity
/ Balasubramanian, Vijay (Pennsylvania U. ; Vrije U., Brussels ; Intl. Solvay Inst., Brussels) ; Decross, Matthew (Pennsylvania U.) ; Sárosi, Gábor (Pennsylvania U. ; CERN)
We construct a single-boundary wormhole geometry in type IIB supergravity by perturbing two stacks of $N$ extremal D3-branes in the decoupling limit. The solution interpolates from a two-sided planar AdS-Schwarzschild geometry in the interior, through a harmonic two-center solution in the intermediate region, to an asymptotic AdS space. [...]
arXiv:2009.08980; CERN-TH-2020-153.-
2020 - 44 p.
- Published in : JHEP 2011 (2020) 167
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2020-09-17 04:35 |
Local Primordial Non-Gaussianities and Super-Sample Variance
/ Castorina, Emanuele (CERN) ; Moradinezhad Dizgah, Azadeh (Geneva U., Dept. Theor. Phys.)
Fluctuations with wavelengths larger than the volume of a galaxy survey affect the measurement of the galaxy power spectrum within the survey itself. In the presence of local Primordial Non- Gaussianities (PNG), in addition to the super-sample matter density and tidal fluctuations, the large-scale gravitational potential also induces a modulation of the observed power spectrum. [...]
arXiv:2005.14677; CERN-TH-2020-083; CERN-TH-2020-083 CERN-TH-2020-083.-
2020-10-02 - 20 p.
- Published in : JCAP 2010 (2020) 007
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2020-09-09 04:46 |
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2020-09-01 04:02 |
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2020-09-01 04:02 |
Correspondence between strings in the Hagedorn phase and asymptotically de Sitter space
/ Brustein, Ram (Ben Gurion U. of Negev) ; Medved, A.J.M. (Rhodes U. ; NITheP, Matieland)
A correspondence between closed strings in their high-temperature Hagedorn phase and asymptotically de Sitter (dS) space is established. We identify a thermal, conformal field theory (CFT) whose partition function is, on the one hand, equal to the partition function of closed, interacting, fundamental strings in their Hagedorn phase yet is, on the other hand, also equal to the Hartle-Hawking (HH) wavefunction of an asymptotically dS Universe. [...]
arXiv:2005.09321; CERN-TH-2019-156.-
2020-10-07 - 16 p.
- Published in : Phys. Rev. D 102 (2020) 086002
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2020-08-29 05:13 |
Supernova Triggers for End-Devonian Extinctions
/ Fields, Brian D. (Illinois U., Urbana (main) ; Illinois U., Urbana, Astron. Dept. ; Illinois U., Urbana) ; Melott, Adrian L. (Kansas U.) ; Ellis, John (King's Coll. London ; CERN ; NICPB, Tallinn) ; Ertel, Adrienne F. ; Fry, Brian J. (U.S. Air Force Academy) ; Lieberman, Bruce S. (U. Kansas, Lawrence) ; Liu, Zhenghai (Illinois U., Urbana (main) ; Illinois U., Urbana, Astron. Dept.) ; Miller, Jesse A. (Illinois U., Urbana (main) ; Illinois U., Urbana, Astron. Dept.) ; Thomas, Brian C. (Washburn U.)
The Late Devonian was a protracted period of low speciation resulting in biodiversity decline, culminating in extinction events near the Devonian-Carboniferous boundary. Recent evidence indicates that the final extinction event may have coincided with a dramatic drop in stratospheric ozone, possibly due to a global temperature rise. [...]
arXiv:2007.01887; CERN-TH-2020-102; CERN-TH-2020-102.-
2020-09-01 - 3 p.
- Published in : Proc. Natl. Acad. Sci. U. S. A. 117 (2020) 21008–21010
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2020-08-27 04:02 |
String Universality and Non-Simply-Connected Gauge Groups in 8d
/ Cvetič, Mirjam (Pennsylvania U. ; Maribor U.) ; Dierigl, Markus (Pennsylvania U.) ; Lin, Ling (CERN) ; Zhang, Hao Y. (Pennsylvania U.)
We present a consistency condition for 8d ${\cal N} = 1$ supergravity theories with non-trivial global structure $G/Z$ for the non-Abelian gauge group, based on an anomaly involving the $Z$ 1-form center symmetry. The interplay with other Swampland criteria identifies the majority of 8d theories with gauge group $G/Z$, which have no string theory realization, as inconsistent quantum theories when coupled to gravity. [...]
arXiv:2008.10605; CERN-TH-2020-138; UPR-1306-T.-
2020-11-20 - 6 p.
- Published in : Phys. Rev. Lett. 125 (2020) 211602
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