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Euclid. I. Overview of the Euclid mission
/ Euclid Collaboration
The current standard model of cosmology successfully describes a variety of measurements, but the nature of its main ingredients, dark matter and dark energy, remains unknown. [...]
arXiv:2405.13491.
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94.
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2.
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Snowmass Theory Frontier: Astrophysics and Cosmology
/ Green, Daniel (UC, San Diego) ; Ruderman, Joshua T. (New York U., CCPP) ; Safdi, Benjamin R. (UC, Berkeley) ; Shelton, Jessie (Illinois U., Urbana) ; Achucarro, Ana (Leiden U.) ; Adshead, Peter (Illinois U., Urbana) ; Akrami, Yashar (Case Western Reserve U. ; Imperial Coll., London) ; Baryakhtar, Masha (Washington U., Seattle) ; Baumann, Daniel (Taiwan, Natl. Taiwan U. ; U. Amsterdam, GRAPPA) ; Berlin, Asher (Fermilab) et al.
We summarize progress made in theoretical astrophysics and cosmology over the past decade and areas of interest for the coming decade. [...]
arXiv:2209.06854 ; FERMILAB-PUB-22-721-T.
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57.
Fermilab Library Server - Fulltext - Fulltext
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3.
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Inflation: Theory and Observations
/ Achúcarro, Ana (Leiden U. ; Basque U., Bilbao) ; Biagetti, Matteo (SISSA, Trieste ; INFN, Trieste ; Trieste Observ.) ; Braglia, Matteo (Madrid, IFT ; Bologna Observ.) ; Cabass, Giovanni (Princeton, Inst. Advanced Study) ; Caldwell, Robert (Dartmouth Coll.) ; Castorina, Emanuele (Milan U.) ; Chen, Xingang (Harvard U.) ; Coulton, William (CCA, New York) ; Flauger, Raphael (UC, San Diego) ; Fumagalli, Jacopo (Madrid, IFT) et al.
Cosmic inflation provides a window to the highest energy densities accessible in nature, far beyond those achievable in any realistic terrestrial experiment. [...]
arXiv:2203.08128.
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103.
eConf - Fulltext
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Prospects for Fundamental Physics with LISA
/ LISA Collaboration
In this paper, which is of programmatic rather than quantitative nature, we aim to further delineate and sharpen the future potential of the LISA mission in the area of fundamental physics. Given the very broad range of topics that might be relevant to LISA, we present here a sample of what we view as particularly promising directions, based in part on the current research interests of the LISA scientific community in the area of fundamental physics. [...]
arXiv:2001.09793.-
2020-08-31 - 22 p.
Fulltext: PDF;
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5.
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Electromagnetic probes of primordial black holes as dark matter
/ Kashlinsky, A. (NASA, Goddard ; SSAI, Lanham) ; Ali-Haimoud, Y. (New York U.) ; Clesse, S. (Louvain U. ; Namur U.) ; Garcia-Bellido, J. (Madrid, IFT ; CSIC, Madrid) ; Wyrzykowski, L. (Warsaw U.) ; Achucarro, A. (Leiden U.) ; Amendola, L. (Heidelberg U.) ; Annis, J. (Fermilab) ; Arbey, A. (Lyon, IPN) ; Arendt, R.G. (NASA, Goddard ; Maryland U., Baltimore County) et al.
The LIGO discoveries have rekindled suggestions that primordial black holes (BHs) may constitute part to all of the dark matter (DM) in the Universe. [...]
arXiv:1903.04424 ; FERMILAB-PUB-19-111-CD.
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2019 - 19.
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Exploring cosmic origins with CORE: Survey requirements and mission design
/ CORE Collaboration
Future observations of cosmic microwave background (CMB) polarisation have the potential to answer some of the most fundamental questions of modern physics and cosmology. In this paper, we list the requirements for a future CMB polarisation survey addressing these scientific objectives, and discuss the design drivers of the CORE space mission proposed to ESA in answer to the "M5" call for a medium-sized mission. [...]
arXiv:1706.04516.-
2018-04-05 - 79 p.
- Published in : JCAP
Fulltext: PDF; Preprint: PDF;
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Exploring Cosmic Origins with CORE: Inflation
/ Finelli, Fabio (Bologna Observ. ; INFN, Bologna) ; Bucher, Martin (APC, Paris) ; Achúcarro, Ana (Leiden U. ; Basque U., Bilbao) ; Ballardini, Mario (Bologna U. ; Bologna Observ. ; INFN, Bologna) ; Bartolo, Nicola (Padua U. ; INFN, Padua ; Padua Observ.) ; Baumann, Daniel (Cambridge U., DAMTP ; Amsterdam U.) ; Clesse, Sébastien (Aachen, Tech. Hochsch.) ; Errard, Josquin (ILP, Paris ; Paris U., VI-VII) ; Handley, Will (Cambridge U. ; Cambridge U., KICC) ; Hindmarsh, Mark (Sussex U. ; Helsinki Inst. of Phys. ; Helsinki U.) et al.
/CORE
We forecast the scientific capabilities to improve our understanding of cosmic inflation of CORE, a proposed CMB space satellite submitted in response to the ESA fifth call for a medium-size mission opportunity. The CORE satellite will map the CMB anisotropies in temperature and polarization in 19 frequency channels spanning the range 60-600 GHz. [...]
arXiv:1612.08270.-
2018-04-05 - 100 p.
- Published in : JCAP 04 (2018) 016
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Heavy fields, reduced speeds of sound and decoupling during inflation
/ Achucarro, Ana (Basque U., Bilbao ; Leiden U.) ; Atal, Vicente (Leiden U.) ; Cespedes, Sebastian (Chile U., Santiago) ; Gong, Jinn-Ouk (CERN) ; Palma, Gonzalo A (Chile U., Santiago) ; Patil, Subodh P (Ecole Polytechnique, CPHT)
We discuss and clarify the validity of effective single field theories of inflation obtained by integrating out heavy degrees of freedom in the regime where adiabatic perturbations propagate with a suppressed speed of sound. We show by construction that it is indeed possible to have inflationary backgrounds where the speed of sound remains suppressed and slow-roll persists for long enough. [...]
arXiv:1205.0710; CERN-PH-TH-2012-097.-
2012
- Published in : Phys. Rev. D 86 (2012) 121301
APS Published version, local copy: PDF; External link: Preprint
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10.
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Effective theories of single field inflation when heavy fields matter
/ Achucarro, Ana (Leiden U. ; Basque U., Bilbao) ; Gong, Jinn-Ouk (CERN) ; Hardeman, Sjoerd (Leiden U.) ; Palma, Gonzalo A (Chile U., Beaucheff) ; Patil, Subodh P (Ec. Polytech., Palaiseau (main) ; Ecole Normale Superieure)
We compute the low energy effective field theory (EFT) expansion for single-field inflationary models that descend from a parent theory containing multiple other scalar fields. By assuming that all other degrees of freedom in the parent theory are sufficiently massive relative to the inflaton, it is possible to derive an EFT valid to arbitrary order in perturbations, provided certain generalized adiabaticity conditions are respected. [...]
arXiv:1201.6342; CERN-PH-TH-2011-222; CPHT-RR 055.0711; LPTENS-11-27.-
2012
- Published in : JHEP 05 (2012) 066
Springer Open Access article: PDF; External link: Preprint
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