Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Comellas, Jordi"'
Autor:
Comellas, Jordi
Publikováno v:
Nucl.Phys. B509 (1998) 662-686
The connection between the anomalous dimension and some invariance properties of the fixed point actions within exact RG is explored. As an application, Polchinski equation at next-to-leading order in the derivative expansion is studied. For the Wils
Externí odkaz:
http://arxiv.org/abs/hep-th/9705129
Autor:
Comellas, Jordi, Travesset, Alex
Publikováno v:
Nucl.Phys. B498 (1997) 539-564
Using Wegner-Houghton equation, within the Local Potential Approximation, we study critical properties of O(N) vector models. Fixed Points, together with their critical exponents and eigenoperators, are obtained for a large set of values of N, includ
Externí odkaz:
http://arxiv.org/abs/hep-th/9701028
Autor:
Comellas, Jordi
The development of the Exact Renormalization Group for fermionic theories is presented, together with its application to the chiral Gross-Neveu model. We focus on the reliability of various approximations, specifically the derivative expansion and fu
Externí odkaz:
http://arxiv.org/abs/hep-th/9609236
Autor:
Comellas, Jordi, Latorre, Jose I.
We present a line of reasoning based on the analysis of scale variations of the Wilsonian partition function and the trace of the stress tensor in a curved manifold which results in a statement of irreversibility of Wilsonian renormalization group fl
Externí odkaz:
http://arxiv.org/abs/hep-th/9602123
We give a review of the exact renormalization group (ERG) approach and illustrate its applications in scalar and fermionic theories. The derivative expansion and approximations based on the derivative expansion with further truncation in the number o
Externí odkaz:
http://arxiv.org/abs/hep-th/9601112
Publikováno v:
Nucl.Phys. B490 (1997) 653-686
The exact renormalization group approach (ERG) is developed for the case of pure fermionic theories by deriving a Grassmann version of the ERG equation and applying it to the study of fixed point solutions and critical exponents of the two-dimensiona
Externí odkaz:
http://arxiv.org/abs/hep-th/9512086
Publikováno v:
Phys.Lett. B360 (1995) 109-116
We explore some of the constraints imposed by positivity of the QCD measure (Weingarten's inequalities) on the parameters defining chiral perturbation theory. We find, in particular, that $2 m_q (\mu)\leq B_0(\mu) Z(\mu)$. The use of further properti
Externí odkaz:
http://arxiv.org/abs/hep-ph/9507258
Autor:
Bondia, Jesús, Cobo, Pedro, Giménez, Joaquín, Campos, Francesc, Comellas, Jordi, Serra, Jaumi, Sol, Manuel, Vilella, Xavier
En este artículo presentamos un modelo de acción tutorial de los trabajos de investigación en el bachillerato, que estamos poniendo en práctica. Clasificamos los diferentes tipos de investigaciones y analizamos los puntos más significativos de t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2666::c6576893f3145dc44bd11b6b851eee9b
http://funes.uniandes.edu.co/7332/
http://funes.uniandes.edu.co/7332/
Publikováno v:
Redined, Red de Información Educativa
Ministerio de Educación, Cultura y Deporte (MECD)
Ministerio de Educación, Cultura y Deporte (MECD)
Resumen de la revista La idea de proyectos en la clase de matemáticas lleva ya casi un siglo desarrollándose, con sutiles, aunque importantes diferencias entre los autores. Para los autores, un proyecto es una actividad de investigación, prolongad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=RECOLECTA___::621d79f9de23f2b06609241280509b94
http://hdl.handle.net/11162/24959
http://hdl.handle.net/11162/24959
Autor:
Bondia, Jesús, Campos, Francesc, Cobo, Pedro, Comellas, Jordi, Giménez, Joaquim, Serra, Jaume, Sol, Manel, Vilella, Xavier
Publikováno v:
Redined, Red de Información Educativa
Ministerio de Educación, Cultura y Deporte (MECD)
Ministerio de Educación, Cultura y Deporte (MECD)
Resumen basado en el que aporta la revista Se propone una secuencia didáctica para trabajar los conceptos matemáticos de área y perímetro concebida para primero de la ESO. El contenido del curso se organiza en seis etapas que simulan un viaje alr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=RECOLECTA___::c7f8b3ca98af46f561fb55bed96bb2b9
http://hdl.handle.net/11162/31048
http://hdl.handle.net/11162/31048