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Higuchi bound

WebOct 1, 2024 · In this setup, the minimal inflationary field content interacts with the massive spin-2 field through dRGT interactions, thus guaranteeing the absence of Boulware-Deser ghostly degrees of freedom. The unitarity requirement on spinning particles, known as Higuchi bound, plays a crucial role for the size of the observable signal. Authors: WebJan 31, 2024 · In particular it ensures that the Higuchi bound is satisfied at all scales, that no Vainshtein mechanism is needed to satisfy Solar System experiments, and that the strong coupling scale is always above the scale of cosmological interest all …

Light Particles with Spin in Inflation - IOPscience

WebJan 29, 2024 · [PR] Madoka Higuchi Tied up. By. VakaOsciosa. Watch. Published: Jan 30, 2024. 783 Favourites. 3 Comments. 41.1K Views. gagged tiedup idolmaster … WebJan 24, 2024 · In the context of bimetric theories, the stability of the homogeneous and isotropic universe requires (see footnote 2) the generalized Higuchi bound condition to be satisfied. In the standard bigravity theory on a de Sitter background spacetime, it reduces to the classical Higuchi bound ( 32 ). early voting amesbury ma https://welcomehomenutrition.com

A Note on String Excitations and the Higuchi Bound - arXiv

WebJul 4, 2024 · Interestingly, as a consequence of accelerated expansion, there exists a maximum spin for each Regge trajectory, which is helpful to make the spectrum consistent with the Higuchi bound, but at the same time, it could be an obstruction to stringy UV completion based on an infinite higher-spin tower. WebApr 14, 2024 · Water structuring in the hydrogels showed appreciably more variance, with ratios of free to bound water differing from 16.7:1 (NVF) to 1.3:1 (CEA), corresponding to PNVF having ~67 water molecules per repeat unit. The release studies of different dye molecules followed Higuchi’s model, with the amount of dye released from the hydrogels ... WebOct 9, 2024 · The existence of light particles with spin during inflation is prohibited by the Higuchi bound. This conclusion can be evaded if one considers states with a sizeable coupling with the inflaton foliation, since this breaks the de Sitter isometries. The action for these states can be constructed within the Effective Field Theory of Inflation, or ... csulb recreation center

Cosmological perturbations in massive gravity and the …

Category:arXiv:1907.02535v3 [hep-th] 13 Sep 2024

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Higuchi bound

L Académie Alice Tome 22 By Tachibana Higuchi

WebSep 23, 2016 · The International School for Advanced Studies (SISSA) was founded in 1978 and was the first institution in Italy to promote post-graduate courses leading to a Doctor … WebMay 31, 2024 · We demonstrate that all rigidly rotating strings with center of mass at the origin of the dS 3 static patch satisfy the Higuchi bound. This extends the observation of …

Higuchi bound

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WebMar 23, 2024 · Higuchi Bound on Slow Roll Inflation and the Swampland Marvin Lüben, Dieter Lust In this paper we study the implications of the generalized Higuchi bound on … WebAug 9, 2012 · We extend the notion of the Higuchi bound and partial masslessness to ghost-free nonlinear bimetric theories. This can be achieved in a simple way by first considering linear massive spin-2 perturbations around maximally symmetric background solutions, for which the linear gauge symmetry at the Higuchi bound is easily identified.

Webcalled Higuchi bound [10], m2 ≥ sðs−1ÞH2; ð1Þ on the mass of higher-spin particles in de Sitter space [11]. Here, m and s are the mass and spin of a particle, respectively, and H ¼ 1=R is the Hubble parameter with R being the de Sitter radius. Massive higher-spin particles violating the Higuchi bound contain helicity modes with a WebWe extend the notion of the Higuchi bound and partial masslessness to ghost-free nonlinear bimetric theories. This can be achieved in a simple way by first considering linear massive spin-2 perturbations around maximally symmetric background solutions, for which the linear gauge symmetry at the Higuchi bound is easily identified. ...

WebJun 1, 1988 · In this brief note we consider the interaction between high spin excitations in string theory along the Regge trajectory and the Higuchi bound in de Sitter space. There is … WebFeb 22, 2024 · Mass and spin for classical strings in. We demonstrate that all rigidly rotating strings with center of mass at the origin of the static patch satisfy the Higuchi bound. This extends the observation of Noumi et al. for the open GKP-like string to all solutions of the Larsen-Sanchez class. We argue that strings violating the bound end up ...

WebMar 1, 2024 · Our interesting observation is the abrupt behavior of the system just when the theory touches the Higuchi bound [17], where the constraint structure of the system has a completely different character. Exactly at the Higuchi bound, one chain of constraints with four second class elements changes to a first class chain with three elements.

WebAug 4, 2024 · We discuss the conditions to satisfy the Higuchi bound and to avoid gradient instabilities in the scalar sector for cosmological solutions in singly coupled bimetric … early voting amherst maWebMar 29, 2010 · 1. It is worth to mention that in a recent paper [7] a mechanism was described to modify the Higuchi bound in a de Sitter Universe by adding a suitable coupled ghost; in our work we will consider only canonically normalized scalar fields. See also [8] for the study of the behavior of a different model of infrared-modified gravity on FRW … csulb redshelfWebsquared against spin. The quadratic red line is the Higuchi bound, while the linear blue line is the string Regge trajec-tory. At the crossing point the Higuchi bound is violated, and so if the perturbative string is to be consistent on such a background the Higuchi analysis must break down at a scale. bound (1) scales quadratically with the ... csulb recreation and leisure studiesWebApr 14, 2024 · They are bound by unflinching self-belief, ability to focus and commitment to keep giving their best week in-week out irrespective of the outcome. ... Higuchi is one of the founding members of the Japan LPGA (JLPGA) Tour, which came into being in 1968. She has a whopping 69 JLPGA titles to her name. In 2003, Higuchi was the first Japanese ... csulb redshelf ebook rentalWebNov 20, 2012 · Cosmological perturbations in massive gravity and the Higuchi bound. Matteo Fasiello 1 and Andrew J. Tolley 1. Published 20 November 2012 • Published under … csulb redshelf loginWebMar 12, 2024 · In this letter we show that the Higuchi bound can be circumvented in an alternative description of massive spin-2 particles known as $\mathcal {L} (a_1)$ models. … csulb recyclingearly voting anchorage ak