Higuchi bound
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 … WebThis inequality, called Higuchi bound [6], is a consequence of the (approximate) de Sitter symmetries during in ation. It implies that particles with spin decay outside the horizon faster than 1=a, where ais the scale factor. This implies that they leave a small e ect in the squeezed limit of correlation functions.
Higuchi bound
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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 ). 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.
WebLast, Higuchi's group-theoretic analysis of the eigenmodes showed that there is a lower bound for the mass parameter of integer-spin fields, below which the fields can only be non-unitary 3 .... WebMar 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. …
Websquared 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 ... WebDec 7, 2024 · Interestingly, as a consequence of accelerated expansion, there exists a maximum spin for each Regge trajectory, which is helpful to make the spectrum …
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
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 … porsche 911 motorhaubeWebIn 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 always a … porsche 911 model numbersWebApr 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 ... sharpsburg ky city hallWebThe value of mg is precisely the Spin-2 gauge line appearing on the Λ - m 2 g phase diagram for Spin-2, the partially massless gauge lines introduced by Deser & Waldron in the m 2 g, Λ) phase plane and described as the Higuchi bound m 2 g = 2 Λ /3. Note that this graviton is unitary with only four polarization degrees of freedom (helicities ... porsche 911 motorWebThe red head whipped his head up, eyes wide as he spots Higuchi bound similarly. There was a large difference between him being bound and her however… he at least had all his clothes. “Higuchi!” He gasps. “Are you okay? ... Higuchi shook her head and pulled his fist back and he couldn’t stop himself from following her. He saw the ... sharpsburg georgia health insurance providersWebWe 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. ... sharpsburg ga homes for sale by ownerWebSep 1, 2016 · @article{osti_22679453, title = {Tensor squeezed limits and the Higuchi bound}, author = {Bordin, Lorenzo and Creminelli, Paolo and Mirbabayi, Mehrdad and Noreña, Jorge}, abstractNote = {We point out that tensor consistency relations—i.e. the behavior of primordial correlation functions in the limit a tensor mode has a small momentum—are … sharpsburg battle of antietam