Zobrazeno 1 - 10
of 431
pro vyhledávání: '"Quaglia R."'
Autor:
Quaglia, R. Gonzalez, Quiros, Israel
In this paper, we delve into the significance of local scale symmetry and the role of the associated noether current, within gravitational theories which are based in non-riemannian background space. Our focus is in Weyl and in Riemann-Cartan geometr
Externí odkaz:
http://arxiv.org/abs/2309.01845
Building on the success of the Starobinsky model in describing the inflationary period of the universe, we investigate two simple generalizations of this model and their constraints imposed by the reheating epoch. The first generalization takes the f
Externí odkaz:
http://arxiv.org/abs/2306.15831
Autor:
Quaglia, R. Gonzalez
Scalar fields are widely and popularly used in cosmology in order to explain different phenomena among which, inflation and dark energy are two of the most popular ones. Specifically, in recent years, scale invariance in the gravitational sector has
Externí odkaz:
http://arxiv.org/abs/2301.07250
We present a simple procedure to obtain universal bounds for quantities of cosmological interest, such as the number of $e$-folds during inflation, reheating, and radiation, as well as the reheating temperature. The main assumption is to represent ea
Externí odkaz:
http://arxiv.org/abs/2212.03730
Autor:
Quaglia, R. Gonzalez, German, Gabriel
In recent years, gravitational models motivated by quantum corrections to gravity which introduce higher order terms like $R^{2}$ or terms in which the Riemann tensor is not symmetric have been studied by several authors in the form of a general Bran
Externí odkaz:
http://arxiv.org/abs/2206.14228
Autor:
Marton J., Bazzi M., Beer G., Berucci C., Bosnar D., Bragadireanu A.M., Cargnelli M., Clozza A., Curceanu C., d’Uffizi A., Fiorini C., Ghio F., Guaraldo C., Hayano R., Iliescu M., Ishiwatari T., Iwasaki M., Sandri P. Levi, Okada S., Pietreanu D., Piscicchia K., Ponta T., Quaglia R., Vidal A. Romero, Sbardella E., Scordo A., Shi H., Sirghi D.L., Sirghi F., Tatsuno H., Doce O. Vazquez, Widmann E., Zmeskal J.
Publikováno v:
EPJ Web of Conferences, Vol 113, p 03009 (2016)
The strong interaction of antikaons (K−) with nucleons and nuclei in the low-energy regime represents an active research field connected intrinsically with few-body physics. There are important open questions like the question of antikaon nuclear b
Externí odkaz:
https://doaj.org/article/f49fdf238efe4d6ab13e7e10d54e654e
Autor:
Tucaković Ivana, Bazzi M., Berucci C., Bosnar D., Bragadireanu A.M., Cargnelli M., Clozza A., Curceanu C., D’Uffizi A., Fabbietti L., Fiorini C., Ghio F., Guaraldo C., Iliescu M., Ishiwatari T., Levi Sandri P., Marton J., Pietreanu D., Piscicchia K., Poli Lener M., Quaglia R., Sbardella E., Scordo A., Shi H., Sirghi D.L., Sirghi F., Tatsuno H., Doce O. Vazquez, Widmann E., Zmeskal J.
Publikováno v:
EPJ Web of Conferences, Vol 95, p 04072 (2015)
The AMADEUS experiment deals with the investigation of the low-energy kaon-nuclei hadronic interaction at the DAΦNE collider at LNF-INFN, fundamental to respond to longstanding open questions in the non-perturbative QCD in the strangeness sector. On
Externí odkaz:
https://doaj.org/article/0f5f26f4b77048039aab58a69d2de0e8
Autor:
Cargnelli M., Bazzi M., Beer G., Berucci C., Bragadireanu A.M., Curceanu C., d'Uffizi A., Fiorini C., Ghio F., Guaraldo C., Hayano R., Iliescu M., Ishiwatari T., Iwasaki M., Levi Sandri P., Marton J., Okada S., Pietreanu D., Ponta T., Quaglia R., Romero Vidal A., Sbardella E., Scordo A., Shi H., Sirghi D.L., Sirghi F., Tatsuno H, Vazquez Doce O, Widmann E, Wünschek B, Zmeskal J
Publikováno v:
EPJ Web of Conferences, Vol 73, p 05008 (2014)
The X-ray measurements of kaonic atoms play an important role for understanding the low-energy QCD in the strangeness sector. The SIDDHARTA experiment studied the X-ray transitions of 4 light kaonic atoms (H, D, 3He, and 4He) using the DAFNE electron
Externí odkaz:
https://doaj.org/article/57506a6dd3d5444bb4177fb9bd98f759
Autor:
Shi H., Bazzi M., Beer G., Berucci C., Bragadireanu A.M., Cargnelli M., Curceanu C., d’Uffizi A., Fiorini C., Ghio F., Guaraldo C., Hayano R.S., Iliescu M., Ishiwatari T., Iwasaki M., Kienle P., Levi Sandri P., Marton J., Okada S., Pietreanu D., Piscicchia K., Ponta T., Quaglia R., Romero Vidal A., Sbardella E., Scordo A., Sirghi D.L., Sirghi F., Tatsuno H., Vazquez Doce O., Widmann E., Zmeskal J.
Publikováno v:
EPJ Web of Conferences, Vol 66, p 09016 (2014)
We measured K-series kaonic hydrogen X-rays in the SIDDHARTA experiment performed at the DAΦNE electron-positron collider of Laboratori Nazionali di Frascati. With a gaseous hydrogen target of density 15 ρSTP, preliminary values of the absolute yie
Externí odkaz:
https://doaj.org/article/d3852fbcfe2a48d7bf179a13ae43a7e7
Autor:
Ishiwatari T., Bazzi M., Beer G., Berucci C., Bombelli L., Bragadireanu A.M., Cargnelli M., Curceanu C., d’Uffizi A., Fiorini C., Ghio F., Guaraldo C., Hayano R.S., Iliescu M., Iwasaki M., Kienle P., Levi Sandri P., Longoni A., Marton J., Okada S., Pietreanu D., Ponta T., Quaglia R., Romero Vidal A., Sbardella E., Scordo A., Shi H., Sirghi D.L., Sirghi F., Tatsuno H., Tudorache A., Tudorache V., Vazquez Doce O., Wünschek B., Widmann E., Zmeskal J.
Publikováno v:
EPJ Web of Conferences, Vol 66, p 05016 (2014)
The strong-interaction shifts and widths of kaonic hydrogen, deuterium, 3He, and 4He were measured in the SIDDHARTA experiment. The most precise values of the shift and width of the kaonic hydrogen 1s state were determined to be ϵ1s = −283 ± 36(s
Externí odkaz:
https://doaj.org/article/0baa04e3b6fd4d5ab292a4a93d5b79a0