Zobrazeno 1 - 10
of 910
pro vyhledávání: '"Ramazanoğlu, A."'
We show that higher form fields, specifically 2- and 3-forms in four spacetime dimensions, suffer from loss of hyperbolicity when they have self interaction. The equations of motion lose their wave-like characteristic in certain parts of the configur
Externí odkaz:
http://arxiv.org/abs/2406.15321
Publikováno v:
Research in Sports Science, Vol 14, Iss 2, Pp 42-47 (2024)
This study aimed to investigate hand grip and rope-pulling strength and endurance in laser-class sailors. Seventeen laser class sailors, 15 males and two females participated in this study voluntarily. Hand grip and sheet rope-pulling tests were perf
Externí odkaz:
https://doaj.org/article/43ed08544ab546d885457ccb985abc4f
Publikováno v:
Türk Yoğun Bakim Derneği Dergisi, Vol 22, Iss 3, Pp 212-217 (2024)
Objective: In the management of haemodynamically unstable patients, cardiac output (CO) measurement provides clinicians with important data on organ tissue perfusion. This measurement can be performed by pulse-induced contour cardiac output (PiCCO) u
Externí odkaz:
https://doaj.org/article/04520c19708047648a730c7c9469748e
Autor:
Coates, Andrew, Ramazanoğlu, Fethi M.
Publikováno v:
Phys. Rev. D 108, L101501 (2023)
We demonstrate some shortcomings of "fixing the equations," an increasingly popular remedy for time evolution problems of effective field theories (EFTs). We compare the EFTs and their "fixed" versions to the UV theories from which they can be derive
Externí odkaz:
http://arxiv.org/abs/2307.07743
Publikováno v:
Phys. Rev. D 108, 044022 (2023)
Various groups recently demonstrated that the time evolution of simplest self-interacting vector fields, those with self-interaction potentials, can break down after a finite duration in what is called loss of hyperbolicity. We establish that this is
Externí odkaz:
http://arxiv.org/abs/2306.03554
Simultaneous measurements of neutron star masses and radii can be used to constrain deviations from general relativity (GR) as was recently demonstrated for the spontaneous scalarization model of Damour and Esposito-Far\`{e}se (DEF). Here, we investi
Externí odkaz:
http://arxiv.org/abs/2303.01910
Autor:
Coates, Andrew, Ramazanoğlu, Fethi M.
Publikováno v:
Phys. Rev. D 107, 104036 (2023)
Various groups recently argued that self-interacting vector field theories lack a well-defined time evolution when the field grows to large amplitudes, which has drastic consequences for models in gravity and high energy theory. Such field amplitudes
Externí odkaz:
http://arxiv.org/abs/2301.02263
Autor:
Coates, Andrew, Ramazanoğlu, Fethi M.
Publikováno v:
Phys. Rev. Lett. 130, 021401 (2023)
Self-interacting vectors are seeing a burst of interest where various groups demonstrated that the field evolution ends in finite time. Two nonequivalent criteria have been offered to identify this breakdown: (i) the vector constraint equation cannot
Externí odkaz:
http://arxiv.org/abs/2211.08027
Autor:
Doneva, Daniela D., Ramazanoğlu, Fethi M., Silva, Hector O., Sotiriou, Thomas P., Yazadjiev, Stoytcho S.
Publikováno v:
Rev. Mod. Phys. 96, 015004 (2024)
Scalarization is a mechanism that endows strongly self-gravitating bodies, such as neutron stars and black holes, with a scalar-field configuration. It resembles a phase transition in that the scalar configuration appears only when a certain quantity
Externí odkaz:
http://arxiv.org/abs/2211.01766
Autor:
Coates, Andrew, Ramazanoğlu, Fethi M.
Publikováno v:
Phys. Rev. Lett. 129, 151103 (2022)
We show that self-interacting vector field theories exhibit unphysical behaviour even when they are not coupled to any external field. This means any theory featuring such vectors is in danger of being unphysical, an alarming prospect for many propos
Externí odkaz:
http://arxiv.org/abs/2205.07784