Gauge quintessence

Pilo, Luigi; Rayner, D. A. J.; Riotto, Antonio

doi:10.1103/physrevd.68.043503

Cited by 37 publications

(46 citation statements)

References 25 publications

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“…where L n is defined as in (6.75), and where we have set the tadpole term to zero for simplicity, is mapped to to a dual galileon theory 79) where the relation between the coefficients is…”

Section: Dualitymentioning

confidence: 99%

Beyond the cosmological standard model

et al. 2015

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After a decade and a half of research motivated by the accelerating universe, theory and experiment have a reached a certain level of maturity. The development of theoretical models beyond Λ or smooth dark energy, often called modified gravity, has led to broader insights into a path forward, and a host of observational and experimental tests have been developed. In this review we present the current state of the field and describe a framework for anticipating developments in the next decade. We identify the guiding principles for rigorous and consistent modifications of the standard model, and discuss the prospects for empirical tests.We begin by reviewing recent attempts to consistently modify Einstein gravity in the infrared, focusing on the notion that additional degrees of freedom introduced by the modification must "screen" themselves from local tests of gravity. We categorize screening mechanisms into three broad classes: mechanisms which become active in regions of high Newtonian potential, those in which first derivatives of the field become important, and those for which second derivatives of the field are important. Examples of the first class, such as f (R) gravity, employ the familiar chameleon or symmetron mechanisms, whereas examples of the last class are galileon and massive gravity theories, employing the Vainshtein mechanism. In each case, we describe the theories as effective theories and discuss prospects for completion in a more fundamental theory. We describe experimental tests of each class of theories, summarizing laboratory and solar system tests and describing in some detail astrophysical and cosmological tests. Finally, we discuss prospects for future tests which will be sensitive to different signatures of new physics in the gravitational sector.The review is structured so that those parts that are more relevant to theorists vs. observers/experimentalists are clearly indicated, in the hope that this will serve as a useful reference for both audiences, as well as helping those interested in bridging the gap between them.

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“…where L n is defined as in (6.75), and where we have set the tadpole term to zero for simplicity, is mapped to to a dual galileon theory 79) where the relation between the coefficients is…”

Section: Dualitymentioning

confidence: 99%

Beyond the cosmological standard model

et al. 2015

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“…Also, a natural candidate for the inflaton appears in models of one extra dimension compactified on a circle of radius R, where the Wilson loop for the 5th component of an abelian gauge field behaves as an axion for energies below the compactification scale and its effective decay constant can be made larger than the Planck scale for sufficiently small 4d gauge coupling [17]. This axion model from extra dimensions can also be used for quintessence [18], but at this point is unclear if a model with a scalar complex field like the one suggested here can be incorporated in this context.…”

Section: The Modelmentioning

confidence: 99%

A simple model for quintessential inflation

Rosenfeld¹,

Frieman²

2005

J. Cosmol. Astropart. Phys.

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We propose a simple toy model for quintessential inflation where a complex scalar field described by a lagrangian with a U (1) P Q symmetry spontaneously broken at a high energy scale and explicitly broken by instanton effects at a much lower energy can account for both the early inflationary phase and the recent accelerated expansion of the Universe. The real part of the complex field plays the role of the inflaton whereas the imaginary part, the "axion", is the quintessence field.

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“…See also refs. [14,15] for a discussion on the orbifold S 1 /Z 2 × Z 2 .) When there are chiral fermions on the boundaries we may obtain additional anomaly contributions: the variation of their effective action Γ I (A) reads…”

Section: Orbifold Anomaliesmentioning

confidence: 99%

Localization and Anomalies on Orbifolds

Nibbelink

Nilles

2003

String Phenomenology

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In this talk we discus some properties of supersymmetric theories on orbifolds in five dimensions. The structure of FI-tadpoles may lead to (strong) localization of charged bulk scalars. Orbifold theories may suffer from various kinds of anomalies. The parity anomaly may render the construction of the orbifold theory ill-defined. The gauge anomaly on the orbifold are localized at the fixed points, which can sometimes be canceled by a Chern-Simons term. Based on talks given by the authors at:

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Gauge quintessence

Cited by 37 publications

References 25 publications

Beyond the cosmological standard model

Beyond the cosmological standard model

A simple model for quintessential inflation

Localization and Anomalies on Orbifolds

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