Higuchi bound
WebSep 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 … WebDec 10, 2024 · The Higuchi bound [3] is a bound on the mass of fields with spin two or higher in de Sitter space which captures the absence of ghosts. It states that a field of …
Higuchi bound
Did you know?
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. 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 ).
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. In maximally symmetric spaces the... WebMar 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 …
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 … WebMar 31, 2024 · Interestingly, after BHK-21 cells were treated with PeV-A3 at 4 °C, VP0 proteins bound to BHK-21 cells even in the absence of the FLAG-MYADM protein ... Watanabe K, Oie M, Higuchi M, Nishikawa M, Fujii M. Isolation and characterization of novel human parechovirus from clinical samples. Emerg. Infect. Dis.
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 ...
WebHiguchi bound contain helicity modes with a negative norm, hence they are prohibited by unitarity. Immedi-Ms4 H2 Ms2 H2 s m 2 FIG. 1: Higuchi bound vs linear Regge trajectory: The shaded region is prohibited by the Higuchi bound (1). The linear Regge trajectory (the straight line) enters the prohib-ited region at a critical spin s c ’M2 s =H 2. reabold newsWebSep 1, 2016 · 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 … reabold plcWebMar 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. reabowWebJul 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. reabold victoryWebNov 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 … how to split file using awkWebApr 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 ... reaborn a creepypasta storyWebMar 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 … how to split file