LAUSR

Multi-spin soft bootstrap and scalar-vector Galileon

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0 Published in 2021 at "Journal of High Energy Physics"

DOI: 10.1007/jhep07(2021)153

Abstract: Abstract We use the amplitude soft bootstrap method to explore the space of effective field theories (EFT) of massless vectors and scalars. It is known that demanding vanishing soft limits fixes uniquely a special class… read more here.

Keywords: soft bootstrap; scalar vector; galileon; vector ... See more keywords

Massive Galileon positivity bounds

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0 Published in 2017 at "Journal of High Energy Physics"

DOI: 10.1007/jhep09(2017)072

Abstract: A bstractThe EFT coefficients in any gapped, scalar, Lorentz invariant field theory must satisfy positivity requirements if there is to exist a local, analytic Wilsonian UV completion. We apply these bounds to the tree level… read more here.

Keywords: massive galileon; completion; positivity; galileon positivity ... See more keywords

Weak lensing probe of cubic Galileon model

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1 Published in 2018 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2018/06/017

Abstract: The cubic Galileon model containing the lowest non-trivial order action of the full Galileon action can produce the stable late-time cosmic acceleration. This model can have a significant role in the growth of structures. The… read more here.

Keywords: probe; weak lensing; model; galileon model ... See more keywords

Shift-symmetric 𝖲𝖮(𝖭) multi-Galileon

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0 Published in 2021 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2021/12/045

Abstract: A Poincarè invariant, local scalar field theory in which the Lagrangian and the equation of motion contain only up to second-order derivatives of the fields is called generalized Galileon. The covariant version of it in… read more here.

Keywords: theory; multi; shift symmetric; multi galileon ... See more keywords

Study of cubic Galileon gravity using N -body simulations

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1 Published in 2020 at "Physical Review D"

DOI: 10.1103/physrevd.102.043510

Abstract: We use N-body simulation to study the structure formation in the Cubic Galileon Gravity model where along with the usual kinetic and potential term we also have a higher derivative self-interaction term. We find that… read more here.

Keywords: body; cubic galileon; model; galileon ... See more keywords

Covariantly quantum Galileon

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0 Published in 2017 at "Physical Review D"

DOI: 10.1103/physrevd.95.105002

Abstract: We derive the 1-loop effective action of the cubic Galileon coupled to quantum-gravitational fluctuations in a background and gauge-independent manner, employing the covariant framework of DeWitt and Vilkovisky. Although the bare action respects shift symmetry,… read more here.

Keywords: action; covariantly quantum; quantum galileon; galileon ... See more keywords