The Cauchy problem is studied for an homogeneous quantum kinetic equation describing the Compton effect. Since the collision kernel commonly used in physics is highly singular, numerical simulations are performed for related collision kernels to get a preliminary insight into the behavior of the solutions. Some of the numerical results are then given a theoretical explanation. Global existence of a solution to the Cauchy problem is proven when the L1 initial data are a.e. smaller than the Planck distribution function, and non-existence of solutions to the Cauchy problem is proven when the L1 initial data are a.e. bigger than the Planck distribution function. © 2005 Elsevier Ltd. All rights reserved.
On the Cauchy problem for a quantum kinetic equation linked to the Compton effect
FERRARI, Elisa;
2006
Abstract
The Cauchy problem is studied for an homogeneous quantum kinetic equation describing the Compton effect. Since the collision kernel commonly used in physics is highly singular, numerical simulations are performed for related collision kernels to get a preliminary insight into the behavior of the solutions. Some of the numerical results are then given a theoretical explanation. Global existence of a solution to the Cauchy problem is proven when the L1 initial data are a.e. smaller than the Planck distribution function, and non-existence of solutions to the Cauchy problem is proven when the L1 initial data are a.e. bigger than the Planck distribution function. © 2005 Elsevier Ltd. All rights reserved.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
