Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/178892
Title: On scalar radiation
Author: Fiol Núñez, Bartomeu
Martínez Montoya, Jairo
Keywords: Teoria de camps (Física)
Radiació
Field theory (Physics)
Radiation
Issue Date: 13-Mar-2020
Publisher: Springer Verlag
Abstract: We discuss radiation in theories with scalar fields. Our key observation is that even in flat spacetime, the radiative fields depend qualitatively on the coupling of the scalar field to the Ricci scalar: for non-minimally coupled scalars, the radiative energy density is not positive definite, the radiated power is not Lorentz invariant and it depends on the derivative of the acceleration. We explore implications of this observation for radiation in conformal field theories. First, we find a relation between two coefficients that characterize radiation, that holds in all the conformal field theories we consider. Furthermore, we find evidence that for a 1/2-BPS probe coupled to N = 4 super Yang-Mills, and following an arbitrary trajectory, the spacetime dependence of the one-point function of the energy momentum tensor is independent of the Yang-Mills coupling.
Note: Reproducció del document publicat a: https://doi.org/10.1007/JHEP03(2020)087
It is part of: Journal of High Energy Physics, 2020, vol. 2020, num. 87
URI: http://hdl.handle.net/2445/178892
Related resource: https://doi.org/10.1007/JHEP03(2020)087
ISSN: 1126-6708
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

Files in This Item:
File Description SizeFormat 
701770.pdf384.69 kBAdobe PDFView/Open


This item is licensed under a Creative Commons License Creative Commons