☆ 4.7 Article

Scaling properties of domain wall networks

PHYSICAL REVIEW D (2011)

Journal

PHYSICAL REVIEW D

Volume 84, Issue 10, Pages -

Publisher

AMER PHYSICAL SOC

DOI: 10.1103/PhysRevD.84.103523

Keywords

-

Categories

Astronomy & Astrophysics Physics, Particles & Fields

Funding

Ciencia2007 Research Contract
FCT/MCTES (Portugal)
POPH/FSE (EC)
FCT, Portugal [PTDC/FIS/111725/2009]
STFC
BIS (UK)

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Abstract

We revisit the cosmological evolution of domain wall networks, taking advantage of recent improvements in computing power. We carry out high-resolution field theory simulations in two, three and four spatial dimensions to study the effects of dimensionality and damping on the evolution of the network. Our results are consistent with the expected scale-invariant evolution of the network, which suggests that previous hints of deviations from this behavior may have been due to the limited dynamical range of those simulations. We also use the results of very large (1024(3)) simulations in three cosmological epochs to provide a calibration for the velocity-dependent one-scale model for domain walls: we numerically determine the two free model parameters to have the values c(w) = 0.5 +/- 0.2 and k(w) = 1.1 +/- 0.3.

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Proceedings Paper Instruments & Instrumentation

ANDES, the high resolution spectrograph for the ELT: science case, baseline design and path to construction

A. Marconi, M. Abreu, V. Adibekyan, V. Alberti, S. Albrecht, J. Alcaniz, M. Aliverti, C. Allende Prieto, J. D. Alvarado Gomez, P. J. Amado, M. Amate, M. I. Andersen, E. Artigau, C. Baker, V. Baldini, A. Balestra, S. A. Barnes, F. Baron, S. C. C. Barros, S. M. Bauer, M. Beaulieu, O. Bellido-Tirado, B. Benneke, T. Bensby, E. A. Bergin, K. Biazzo, A. Bik, J. L. Birkby, N. Blind, I. Boisse, E. Bolmont, M. Bonaglia, X. Bonfils, F. Borsa, A. Brandeker, W. Brandner, C. H. Broeg, M. Brogi, D. Brousseau, A. Brucalassi, J. Brynnel, L. A. Buchhave, D. F. Buscher, A. Cabral, G. Calderone, R. Calvo-Ortega, F. Cantalloube, B. L. Canto Martins, L. Carbonaro, G. Chauvin, B. Chazelas, A. -L. Cheffot, Y. S. Cheng, A. Chiavassa, L. Christensen, R. Cirami, N. J. Cook, R. J. Cooke, I. Coretti, S. Covino, N. Cowan, G. Cresci, S. Cristiani, V. Cunha Parro, G. Cupani, V. D'Odorico, I. de Castro Leao, A. De Cia, J. R. De Medeiros, F. Debras, M. Debus, O. Demangeon, M. Dessauges-Zavadsky, P. Di Marcantonio, F. Dionies, R. Doyon, J. Dunn, D. Ehrenreich, J. P. Faria, C. Feruglio, M. Fisher, A. Fontana, M. Fumagalli, T. Fusco, J. Fynbo, O. Gabella, W. Gaessler, E. Gallo, X. Gao, L. Genolet, M. Genoni, P. Giacobbe, E. Giro, R. S. Goncalves, O. A. Gonzalez, J. I. Gonzalez Hernandez, F. Gracia Temich, M. G. Haehnelt, C. Haniff, A. Hatzes, R. Helled, H. J. Hoeijmakers, P. Huke, A. S. Jaervinen, S. P. Jaervinen, A. Kaminski, A. J. Korn, D. Kouach, G. Kowzan, L. Kreidberg, M. Landoni, A. Lanotte, A. Lavail, J. Li, J. Liske, C. Lovis, S. Lucatello, D. Lunney, M. J. MacIntosh, N. Madhusudhan, L. Magrini, R. Maiolino, L. Malo, A. W. S. Man, T. Marquart, E. L. Marques, C. J. A. P. Martins, A. M. Martins, P. Maslowski, E. Mason, C. A. Mason, R. A. McCracken, P. Mergo, G. Micela, T. Mitchell, P. Molliere, M. A. Monteiro, D. Montgomery, C. Mordasini, J. Morin, A. Mucciarelli, M. T. Murphy, M. N'Diaye, B. Neichel, A. T. Niedzielski, E. Niemczura, L. Nortmann, P. Noterdaeme, N. J. Nunes, L. Oggioni, E. Oliva, H. Onel, L. Origlia, G. Ostlin, E. Palle, P. Papaderos, G. Pariani, J. Penate Castro, F. Pepe, L. Perreault Levasseur, P. Petit, L. Pino, J. Piqueras, A. Pollo, K. Poppenhaeger, A. Quirrenbach, E. Rauscher, R. Rebolo, E. M. A. Redaelli, S. Reffert, D. T. Reid, A. Reiners, P. Richter, M. Riva, S. Rivoire, C. Rodriguez-Lopez, I. U. Roederer, D. Romano, S. Rousseau, J. Rowe, S. Salvadori, N. Sanna, N. C. Santos, P. Santos Diaz, J. Sanz-Forcada, M. Sarajlic, J. -F. Sauvage, S. Schaefer, R. P. Schiavon, T. M. Schmidt, C. Selmi, S. Sivanandam, M. Sordet, R. Sordo, F. Sortino, D. Sosnowska, S. G. Sousa, E. Stempels, K. G. Strassmeier, A. Suarez Mascareno, A. Sulich, X. Sun, N. R. Tanvir, F. Tenegi-Sangines, S. Thibault, S. J. Thompson, A. Tozzi, M. Turbet, P. Vallee, R. Varas, K. A. Venn, J. -P. Veran, A. Verma, M. Viel, G. Wade, C. Waring, M. Weber, J. Weder, B. Wehbe, J. Weingrill, M. Woche, M. Xompero, E. Zackrisson, A. Zanutta, M. R. Zapatero Osorio, M. Zechmeister, J. Zimara

Summary: ANDES is an optical-infrared high resolution spectrograph, part of the first generation of ELT instruments. It has a wide range of groundbreaking science cases, including detecting biosignatures from exoplanet atmospheres and directly detecting cosmic acceleration. The ANDES project is driven by a large international consortium.

GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY IX (2022)

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Article Astronomy & Astrophysics

Fundamental physics with ESPRESSO: Constraints on Bekenstein and dark energy models from astrophysical and local probes*

C. J. A. P. Martins, S. Cristiani, G. Cupani, V D'Odorico, R. Genova Santos, A. C. O. Leite, C. M. J. Marques, D. Milakovic, P. Molaro, Michael T. Murphy, N. J. Nunes, Tobias M. Schmidt, V Adibekyan, Y. Alibert, Paolo Di Marcantonio, J. Gonzalez Hernandez, D. Megevand, E. Palle, F. A. Pepe, N. C. Santos, S. G. Sousa, A. Sozzetti, A. Suarez Mascareno, M. R. Zapatero Osorio

Summary: It is expected that dynamical scalar fields in an effective four-dimensional field theory couple to the theory's other degrees of freedom if no new symmetry is introduced to suppress these couplings. This coupling can lead to spacetime variations of the fine-structure constant, which can be tested through astrophysical measurements. In this study, using ESPRESSO and other contemporary measurements, as well as background cosmology data, laboratory atomic clock measurements, and weak equivalence principle measurements, constraints are placed on two classes of varying fine-structure constant models, resulting in significant improvements compared to previous constraints.

PHYSICAL REVIEW D (2022)

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