Results 31 to 40 of about 4,744,635 (350)
Effective field theory and in-in correlators
Journal of High Energy PhysicsThe predictions of inflation are usually defined in terms of equal time in-in correlation functions in an accelerating cosmological background. These same observables exist for quantum field theory in other spacetimes, including flat space. In this paper,
Daniel Green, Guanhao Sun
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Effective field theory approach to pionium [PDF]
Physical Review D, 2000 24 pages, 4 figures, uses feynmf.sty and feynmf.mf, minor corrections in a few formulas, the text and ...
D. Eiras, Joan Soto
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Effective Field Theory for Rydberg Polaritons. [PDF]
Phys Rev Lett, 2016 We develop an effective field theory (EFT) to describe the few- and many-body propagation of one dimensional Rydberg polaritons. We show that the photonic transmission through the Rydberg medium can be found by mapping the propagation problem to a non ...
Gullans MJ +6 more
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The standard model effective field theory at work [PDF]
Reviews of Modern Physics, 2023 The striking success of the Standard Model in explaining precision data and, at the same time, its lack of explanations for various fundamental phenomena, such as dark matter or the baryon asymmetry of the universe, suggests new physics at an energy ...
G. Isidori, Felix Wilsch, D. Wyler
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Radiation-reaction in the Effective Field Theory approach to Post-Minkowskian dynamics [PDF]
Journal of High Energy Physics, 2022 We extend the Post-Minkowskian (PM) effective field theory (EFT) approach to incorporate conservative and dissipative radiation-reaction effects in a unified framework.
Gregor Kalin +2 more
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Gravitational effective field theory islands, low-spin dominance, and the four-graviton amplitude [PDF]
Journal of Physics A: Mathematical and Theoretical, 2021 We analyze constraints from perturbative unitarity and crossing on the leading contributions of higher-dimension operators to the four-graviton amplitude in four spacetime dimensions, including constraints that follow from distinct helicity ...
Z. Bern +2 more
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Gravitational Bremsstrahlung in the post-Minkowskian effective field theory [PDF]
Physical Review D, 2021 We study the gravitational radiation emitted during the scattering of two spinless bodies in the post-Minkowskian Effective Field Theory approach. We derive the conserved stress-energy tensor linearly coupled to gravity and the classical probability ...
Stavros Mougiakakos +2 more
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Spin effects in the effective field theory approach to Post-Minkowskian conservative dynamics [PDF]
Journal of High Energy Physics, 2021 Building upon the worldline effective field theory (EFT) formalism for spinning bodies developed for the Post-Newtonian regime, we generalize the EFT approach to Post-Minkowskian (PM) dynamics to include rotational degrees of freedom in a manifestly ...
Zhengwen Liu +2 more
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D-brane effective field theory from string field theory [PDF]
, 2000 Open string field theory is considered as a tool for deriving the effective action for the massless or tachyonic fields living on D-branes. Some simple calculations are performed in open bosonic string field theory which validate this approach. The level
Washington Taylor
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Extremal effective field theories [PDF]
Journal of High Energy Physics, 2021 Abstract Effective field theories (EFT) parameterize the long-distance effects of short-distance dynamics whose details may or may not be known. Previous work showed that EFT coefficients must obey certain positivity constraints if causality and unitarity are satisfied at all scales.
Caron-Huot, Simon, Duong, Vincent
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