Effective field theory of modified gravity with two scalar fields: Dark energy and dark matter

2014 ◽  
Vol 89 (6) ◽  
Author(s):  
László Á. Gergely ◽  
Shinji Tsujikawa
Keyword(s):  
Field Theory ◽  
Dark Matter ◽  
Dark Energy ◽  
Effective Field Theory ◽  
Modified Gravity ◽  
Scalar Fields ◽  
Effective Field

scholarly journals Inherently stable effective field theory for dark energy and modified gravity

2019 ◽  
Vol 2019 (01) ◽  
pp. 041-041 ◽  
Author(s):  
Lucas Lombriser ◽  
Charles Dalang ◽  
Joe Kennedy ◽  
Andy Taylor
Keyword(s):  
Field Theory ◽  
Dark Energy ◽  
Effective Field Theory ◽  
Modified Gravity ◽  
Effective Field

scholarly journals Testing Screened Modified Gravity

Universe ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 11
Author(s):  
Philippe Brax ◽  
Santiago Casas ◽  
Harry Desmond ◽  
Benjamin Elder
Keyword(s):  
Field Theory ◽  
Solar System ◽  
Long Range ◽  
Effective Field Theory ◽  
Modified Gravity ◽  
Scalar Fields ◽  
Short Review ◽  
Effective Field ◽  
Point Of View ◽  
Theory Point

Long range scalar fields with a coupling to matter appear to violate known bounds on gravitation in the solar system and the laboratory. This is evaded thanks to screening mechanisms. In this short review, we shall present the various screening mechanisms from an effective field theory point of view. We then investigate how they can and will be tested in the laboratory and on astrophysical and cosmological scales.

scholarly journals Dark energy or modified gravity? An effective field theory approach

2013 ◽  
Vol 2013 (08) ◽  
pp. 010-010 ◽  
Author(s):  
Jolyon Bloomfield ◽  
Éanna É Flanagan ◽  
Minjoon Park ◽  
Scott Watson
Keyword(s):  
Field Theory ◽  
Dark Energy ◽  
Effective Field Theory ◽  
Modified Gravity ◽  
Effective Field ◽  
Theory Approach

scholarly journals Effective field theory analysis of dark matter-standard model interactions with spin one mediators

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Fabiola Fortuna ◽  
Pablo Roig ◽  
José Wudka
Keyword(s):  
Field Theory ◽  
Dark Matter ◽  
Standard Model ◽  
Effective Field Theory ◽  
Gamma Ray ◽  
Direct Detection ◽  
Effective Field ◽  
Indirect Detection ◽  
Theory Analysis ◽  
Invisible Decay

Abstract We analyze interactions between dark matter and standard model particles with spin one mediators in an effective field theory framework. In this paper, we are considering dark particles masses in the range from a few MeV to the mass of the Z boson. We use bounds from different experiments: Z invisible decay width, relic density, direct detection experiments, and indirect detection limits from the search of gamma-ray emissions and positron fluxes. We obtain solutions corresponding to operators with antisymmetric tensor mediators that fulfill all those requirements within our approach.

scholarly journals Effective theories with dark matter applications

2021 ◽  
Author(s):  
Subhaditya Bhattacharya ◽  
José Wudka
Keyword(s):  
Field Theory ◽  
Dark Matter ◽  
Effective Field Theory ◽  
Particle Physics ◽  
High Energy ◽  
New Physics ◽  
Effective Field ◽  
The Subject ◽  
Effective Theories ◽  
Detailed Nature

Standard Model (SM) of particle physics has achieved enormous success in describing the interactions among the known fundamental constituents of nature, yet it fails to describe phenomena for which there is very strong experimental evidence, such as the existence of dark matter, and which point to the existence of new physics not included in that model; beyond its existence, experimental data, however, have not provided clear indications as to the nature of that new physics. The effective field theory (EFT) approach, the subject of this review, is designed for this type of situations; it provides a consistent and unbiased framework within which to study new physics effects whose existence is expected but whose detailed nature is known very imperfectly. We will provide a description of this approach together with a discussion of some of its basic theoretical aspects. We then consider applications to high-energy phenomenology and conclude with a discussion of the application of EFT techniques to the study of dark matter physics and its possible interactions with the SM. In several of the applications we also briefly discuss specific models that are ultraviolet complete and may realize the effects described by the EFT.

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