Next meeting:
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Lucas Vicente García-Consuegra,
David Marsh,
Ankit Beniwal,
Silvia Pla García,
Maximilian Detering,
Lucien Heurtier|
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Votes: 1
6 years ago Author:
M. Bashkanov, D. P. Watts
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Votes: 2
6 years ago
Title:
Dark Energy Survey Year 1 Results: Cosmological Constraints from Cluster
Abundances and Weak Lensing
(View PDF)
Author:
[DES Collaboration], Tim Abbott, Michel Aguena, Alex Alarcon, Sahar Allam, Steve Allen, James Annis, Santiago Avila et al.
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Votes: 1
6 years ago
Title:
Comment on A dark matter interpretation of excesses in multiple direct
detection experiments [arXiv:2002.06937]
(View PDF)
Author:
Alan E. Robinson, Émile Michaud
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Votes: 3
6 years ago
Title:
Subtracting compact binary foreground sources to reveal primordial
gravitational-wave backgrounds
(View PDF)
Author:
Surabhi Sachdev, Tania Regimbau, B. S. Sathyaprakash
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Votes: 5
6 years ago Author:
Richard Brito, Sara Grillo, Paolo Pani
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Votes: 4
6 years ago Author:
Noah Kurinsky, Daniel Baxter, Yonatan Kahn, Gordan Krnjaic
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Votes: 2
6 years ago Author:
Antonios Tsokaros, Milton Ruiz, Stuart L. Shapiro
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Votes: 3
6 years ago
Title:
New Sensitivity Curves for Gravitational-Wave Signals from Cosmological
Phase Transitions
(View PDF)
Author: |
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Votes: 4
6 years ago Author:
George Efstathiou, Steven Gratton
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6 years ago
Title: Signals of a Quantum Universe
Link: https://arxiv.org/abs/2001.09149
Description: Daniel Green, Rafael A. Porto
(Submitted on 24 Jan 2020)
Structure in the Universe is widely believed to have originated from quantum fluctuations during an early epoch of accelerated expansion. Yet, the patterns we observe today do not distinguish between quantum or classical primordial fluctuations; current cosmological data is consistent with either possibility. We argue here that a detection of primordial non-Gaussianity can resolve the present situation, and provide a litmus-test for the quantum origin of cosmic structure. Unlike in quantum mechanics, vacuum fluctuations cannot arise in classical theories and therefore long-range classical correlations must result from (real) particles in the initial state. Similarly to flat-space scattering processes, we show how basic principles require these particles to manifest themselves as poles in the n-point functions, in the so-called folded configurations. Following this observation, and assuming fluctuations are (i) correlated over lar
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