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Dipòsit Digital de Documents de la UAB 86 registres trobats  1 - 10següentfinal  anar al registre: La cerca s'ha fet en 0.01 segons. 
1.
4 p, 357.6 KB Thermodynamic aspects of nonequilibrium current fluctuations / Jou i Mirabent, David, 1953- (Universitat Autònoma de Barcelona. Departament de Física) ; Llebot, Josep Enric, 1953- (Universitat Autònoma de Barcelona. Departament de Física) ; Casas Vázquez, José (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
Starting from a macroscopic nonequilibrium entropy, we obtain an expression for the nonequilibrium fluctuations of the electric current in a metallic resistor. Our method goes further than previous theories of irreversible thermodynamics and, as well as microscopic entropies, it leads to results of the same order of magnitude but not completely coincident with the full nonequilibrium corrections obtained from kinetic methods by Tremblay et al.
1982 - 10.1103/PhysRevA.25.3277
Physical review. A, Vol. 25, Issue 6 (June 1982) , p. 3277-3280  
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2.
11 p, 389.9 KB Irreversible-thermodynamic approach to nonequilibrium heat fluctuations / Jou i Mirabent, David, 1953- (Universitat Autònoma de Barcelona. Departament de Física) ; Llebot, Josep Enric, 1953- (Universitat Autònoma de Barcelona. Departament de Física) ; Casas Vázquez, José (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
Starting from a generalized nonequilibrium entropy, and from an extension of the Einstein formula for the probability of the fluctuations, we obtain the second moments of nonequilibrium fluctuations of the specific energy and the heat flux in rigid heat conductors. [...]
1982 - 10.1103/PhysRevA.25.508
Physical review. A, Vol. 25, Issue 1 (January 1982) , p. 508-518  
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3.
3 p, 99.5 KB Generalized van der Waals equation for nonequilibrium fluids / Jou i Mirabent, David, 1953- (Universitat Autònoma de Barcelona. Departament de Física) ; Pérez García, Carlos (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
The inclusion of dissipative fluxes in the set of independent thermodynamic variables leads, among other features, to a modification of the equations of state. Here, we introduce into the van der Waals equation the generalized pressure obtained in extended irreversible thermodynamics and analyze the influence of a shear stress or a heat flux on the critical point of a fluid.
1983 - 10.1103/PhysRevA.28.2541
Physical review. A, Vol. 28, Issue 4 (October 1983) , p. 2541-2543  
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4.
7 p, 377.5 KB Nonlocal and nonlinear effects in shock waves / Jou i Mirabent, David, 1953- (Universitat Autònoma de Barcelona. Departament de Física) ; Pavón Coloma, Diego (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
The formulation of generalized transport laws leading to causal hyperbolic hydrodynamical equations gives rise to a critical Mach number Mc at which a singularity develops in the shock wave layer. This happens in kinetic theory of gases (Grad's 13 moments method) and extended irreversible thermodynamics as well. [...]
1991 - 10.1103/PhysRevA.44.6496
Physical review. A, Vol. 44, Issue 10 (November 1991) , p. 6496-6502  
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5.
4 p, 157.0 KB Ultrarelativistic bound states in spinor and scalar QED / Dykshoorn, William (York University. Department of Physics (Toronto, Canadà)) ; Koniuk, Roman (York University. Department of Physics (Toronto, Canadà)) ; Muñoz Tapia, Ramon (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
Nonperturbative integral equations are developed variationally for two-particle bound states in spinor and scalar quantum electrodynamics. The equations are solved numerically in the massive case and analytically in the massless case. [...]
1990 - 10.1103/PhysRevA.41.60
Physical review. A, Vol. 41, Issue 1 (January 1990) , p. 60-63  
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6.
7 p, 352.3 KB Generalized hydrodynamics and extended irreversible thermodynamics / Jou i Mirabent, David, 1953- (Universitat Autònoma de Barcelona. Departament de Física) ; Pérez García, Carlos (Universitat Autònoma de Barcelona. Departament de Física) ; García-Colín, L. S. (Universidad Nacional Autónoma de México. Instituto de Investigaciones en Materiales) ; López de Haro, M. (Universidad Nacional Autónoma de México. Instituto de Investigaciones en Materiales) ; Rodríguez, R. F. (Universidad Nacional Autónoma de México. Instituto de Investigaciones en Materiales) ; American Physical Society
The thermodynamic implications of the first deviations with respect to the classical hydrodynamic behavior in high-frequency, short-wavelength phenomena are examined. The constitutive equations arising from an extended irreversible-thermodynamic formalism taking into account spatial inhomogeneities in the space of state variables are compared with those used in generalized hydrodynamics. [...]
1985 - 10.1103/PhysRevA.31.2502
Physical review. A, Vol. 31, Issue 4 (April 1985) , p. 2502-2508  
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7.
3 p, 130.8 KB Possible experiment to check the reality of a nonequilibrium temperature / Jou i Mirabent, David, 1953- (Universitat Autònoma de Barcelona. Departament de Física) ; Casas Vázquez, José (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
An experiment is proposed to check the physical reality of a nonequilibrium absolute temperature previously proposed from theoretical grounds in the framework of extended irreversible thermodynamics.
1992 - 10.1103/PhysRevA.45.8371
Physical review. A, Vol. 45, Issue 12 (June 1992) , p. 8371-8373  
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8.
14 p, 608.2 KB Dynamics of coherently pumped lasers with linearly polarized pump and generated fields / Corbalán, R. (Ramón) (Universitat Autònoma de Barcelona. Departament de Física) ; Vilaseca, Ramon (Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear) ; Arjona Carbonell, Montserrat (Universitat Politècnica de Catalunya. Departament d'Òptica i Optometria) ; Pujol Ramo, Jaume (Universitat Politècnica de Catalunya. Departament d'Òptica i Optometria) ; Roldán, E. (Universitat de València. Departament d'Òptica i Optometria i Ciències de la Visió) ; de Valcárcel, G. J. (Universitat Politècnica de València. Departament de Física Aplicada) ; American Physical Society
The influence of light polarization on the dynamics of an optically pumped single-mode laser with a homogeneously broadened four-level medium is theoretically investigated in detail. Pump and laser fields with either parallel or crossed linear polarizations are considered, as are typical in far-infrared-laser experiments. [...]
1993 - 10.1103/PhysRevA.48.1483
Physical review. A, Vol. 48, Issue 2 (August 1993) , p. 1483-1496  
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9.
5 p, 291.9 KB Type-III intermittency in a four-level coherently pumped laser / Pujol Ramo, Jaume (Universitat Politècnica de Catalunya. Departament d'Òptica i Optometria) ; Arjona Carbonell, Montserrat (Universitat Politècnica de Catalunya. Departament d'Òptica i Optometria) ; Corbalán, R. (Ramón) (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
We study a homogeneously broadened four-level model for a coherently pumped laser with pump and laser fields having crossed linear polarizations. For a parameter range of the type explored in the experiments by Tang et al. [...]
1993 - 10.1103/PhysRevA.48.2251
Physical review. A, Vol. 48, Issue 3 (September 1993) , p. 2251-2255  
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10.
6 p, 277.7 KB Investigation of a CO2 laser response to loss perturbation near period doubling / Corbalán, R. (Ramón) (Universitat Autònoma de Barcelona. Departament de Física) ; Cortit Subirà, Jordi (Universitat Autònoma de Barcelona. Departament de Física) ; Pisartchik, Alexander N. (Universitat Autònoma de Barcelona. Departament de Física) ; Chizhevsky, V. N. (National Academy of Sciences of Belarus. B.I. Stepanov Institute of Physics) ; Vilaseca, Ramon (Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear) ; American Physical Society
We have observed, in experiments with a loss-driven CO2 laser operating near the onset of a period-doubling bifurcation, strong amplification of a perturbation signal at half the driving frequency. However, deamplification has been observed above the bifurcation point. [...]
1995 - 10.1103/PhysRevA.51.663
Physical review. A, Vol. 51, Issue 1 (January 1995) , p. 663-668  
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