Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Guido Magnano"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 7, Pp 1-20 (2019)
Abstract In the framework of alternative metric gravity theories, it has been shown by several authors that a generic Lagrangian depending on the Riemann tensor describes a theory with 8 degrees of freedom (which reduce to 3 for f(R) Lagrangians depe
Externí odkaz:
https://doaj.org/article/2020867cab7d40d38bdb303c28e29b32
Autor:
Guido Magnano, Alessandro Perissinotto
Publikováno v:
Gli Spazi della Musica, Vol 9 (2020)
Chi è Johann Sebastian Mastropiero? Il pubblico ispanico lo sa bene: è il personaggio feticcio dei Les Luthiers. Ma chi sono questi Luthiers? Si sono mai visti in televisione? No, in televisione ci sono stati di rado, ma dopo una storia cinquantenn
Externí odkaz:
https://doaj.org/article/582a7a2680294d10aaad275ecee5609a
Autor:
Beniamino Valsesia, Guido Magnano
We observe that the so-called Generalised Equipartition Law for hamiltonian systems is actually valid only under specific hypotheses -- unfortunately omitted in some textbooks -- which limit its applicability when dealing with nonlinear systems. We i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3543f83175f705aa5ca689fe91144842
Autor:
Guido Magnano, Taras Skrypnyk
We propose a non-standard separation of variables for the classical integrable XXX and XXZ spin chains with degenerate twist matrix. We show that for the case of such twist matrices one can interchange the role of classical separating functions $A(u)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4292f32fe9de45f8f568a24eeccdf685
After reviewing the hole argument and its relations with initial value problem and general covariance, we shall discuss how much freedom one has to define the physical state of a system in a generally covariant (or gauge covariant) field theory. We s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdf8931f424cd999cf7035e8bd3eaf5d
http://hdl.handle.net/2318/1656068
http://hdl.handle.net/2318/1656068
Publikováno v:
Psychometrika. 80:44-64
The theoretical probability of misclassification in a mastery test is exactly computed using the raw score probability distribution (in the Rasch model) as a function of the examinee's latent ability. The resulting misclassification probability curve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::240d52ea84d8924ffefba76a36b07818
https://doi.org/10.1007/s11336-013-9371-z
https://doi.org/10.1007/s11336-013-9371-z
Autor:
Guido Magnano
The Legendre transformation method, applied in 1987 to deal with purely metric gravitational Lagrangians with nonlinear dependence on the Ricci tensor, is extended to metric-affine models and is shown to provide a concise and insightful comparison of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a070d95e01b1cc0b779ad80de45f5f18
http://hdl.handle.net/2318/1621837
http://hdl.handle.net/2318/1621837
Autor:
Guido Magnano, Leszek M. Sokolowski
Publikováno v:
Classical and Quantum Gravity. 19:223-236
We derive a generic identity which holds for the metric (i.e. variational) energy-momentum tensor under any field transformation in any generally covariant classical Lagrangian field theory. The identity determines the conditions under which a symmet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::319bfe3bd361028d72655bc7db6122d1
https://doi.org/10.1088/0264-9381/19/2/304
https://doi.org/10.1088/0264-9381/19/2/304
Autor:
Ekkehart Winterroth, S. Mercadante, Lorenzo Fatibene, Marco Ferraris, Guido Magnano, Monica Capone, Simon Garruto, Marcella Palese
We shall consider possible potentials emerging in (purely metric) f(R)-theories for the conformal scalar field. We shall discuss possible approaches to determine models with specific potentials and show that some potentials qualitatively similar to t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::283d619debb6c4d5d06c86bda0a2ce34
http://hdl.handle.net/2318/150286
http://hdl.handle.net/2318/150286