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pro vyhledávání: '"Jaitly, Sumer"'
The double copy relates gravitational theories to the square of gauge theories. While it is well understood in flat backgrounds, its precise realisation around curved spacetimes remains an open question. In this paper, we construct a classical double
Externí odkaz:
http://arxiv.org/abs/2410.23342
Effective field theories (EFT) are strongly constrained by fundamental principles such as unitarity, locality, causality, and Lorentz invariance. In this paper, we consider the EFT of photons (or other $U(1)$ gauge field) and compare different approa
Externí odkaz:
http://arxiv.org/abs/2307.04784
We consider positivity constraints applicable to the Effective Field Theory (EFT) of gravity in arbitrary dimensions. By considering scattering of indefinite initial and final states, we highlight the existence of a gravitational scattering amplitude
Externí odkaz:
http://arxiv.org/abs/2212.04975
Publikováno v:
Phys.Rev.Lett. 128 (2022) 5, 051602
S-matrix bootstrap and positivity bounds are usually viewed as constraints on low-energy theories imposed by the requirement of a standard UV completion. By considering graviton--photon scattering in the Standard Model, we argue that the low-energy t
Externí odkaz:
http://arxiv.org/abs/2111.09226
Publikováno v:
Phys. Rev. D 103, 125020 (2021)
We apply positivity bounds directly to a $U(1)$ gauge theory with charged scalars and charged fermions, i.e. QED, minimally coupled to gravity. Assuming that the massless $t$-channel pole may be discarded, we show that the improved positivity bounds
Externí odkaz:
http://arxiv.org/abs/2012.05798
Publikováno v:
Phys. Rev. D 102, 125023 (2020)
The presence of a massless spin-2 field in an effective field theory results in a $t$-channel pole in the scattering amplitudes that precludes the application of standard positivity bounds. Despite this, recent arguments based on compactification to
Externí odkaz:
http://arxiv.org/abs/2007.12667
Autor:
Adamo, Tim, Jaitly, Sumer
Publikováno v:
J.Phys.A: Math.Theor. 53: 055401, 2020
Four-dimensional conformal fishnet theory is an integrable scalar theory which arises as a double scaling limit of $\gamma$-deformed maximally supersymmetric Yang-Mills. We give a perturbative reformulation of $\gamma$-deformed super-Yang-Mills theor
Externí odkaz:
http://arxiv.org/abs/1908.11220
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Publikováno v:
Journal of High Energy Physics; Jun2024, Vol. 2024 Issue 6, p1-56, 56p
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