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排序方式: 共有92条查询结果,搜索用时 62 毫秒
1.
A. Badalà R. Barbera G. Lo Re A. Palmeri G. S. Pappalardo A. Pulvirenti F. Riggi 《Acta Physica Hungarica A》2006,25(2-4):337-346
Results are shown from a Monte Carlo simulation study of the capabilities of the Inner Tracking System of the ALICE experiment, used in standalone mode, for HBT analysis of Pb?Pb collisions at LHC energies (5.5 ATeV). Different values of the coherence factor and the Gaussian source radius have been studied. For this purpose, a specific ITS stand-alone tracking algorithm, based on the Denby-Peterson neural algorithm, has been developed. 相似文献
2.
It is proven that the canonical Gibbs measure associated with a gas of vortices of intensity ± converges, in the limitN, 0,Nconst, to a Gaussian measure, which is invariant for the two-dimensional Euler equation.On leave from Dipartimento di Matematica Università di Roma Tor Vergata Roma, Italy.On leave from Dipartimento di Matematica Università di Roma La Sapienza, Roma, Italy. 相似文献
3.
Consider a viscous incompressible fluid in the half-plane and letu
t
be a solution of the Navier-Stokes equation. In this paper we prove that the product formula (E
t/n
G
t/n
u)
n
u
0, whereE
t
is the Euler flow,G
t
is the heat flow and is a suitable operator describing the vorticity production due to the boundary, converges uniformly tou
t
in the limitn .Research supported by Ministero della Pubblica Istruzione, CNR contract No. 84.00016.02 and GNFM 相似文献
4.
This paper proves that circular vortex patches in the plane are stable for the nonlinear dynamical system generated by the Euler equations of incompressible fluids. This is achieved by establishing a relative variational principle in terms of either energy or angular momentum. Thus, we exploit and extend Arnold's idea in (1965, 1969) to a nonsmooth setting as well.Research partially supported by DOE contract DE-AT03-82ER12097 to the University of California, Berkeley 相似文献
5.
G. Benfatto C. Marchioro E. Presutti M. Pulvirenti 《Journal of statistical physics》1980,22(3):349-362
We consider an anharmonic crystal described by variablesS
x
,x
d
,S
x
, with one-body interaction ¦S
x
¦
and nearest neighbor (n.n.) two body interaction ¦S
x
–S
y
¦. We prove that, for
d
bounded, , where
is the correlation function for the free boundary condition Gibbs state in ,>0 and are suitable constants independent of and . This generalizes previous results obtained in the case.Research partially supported by Consiglio Nazionale delle Ricerche. 相似文献
6.
Errico Presutti Mario Pulvirenti Brunello Tirozzi 《Communications in Mathematical Physics》1976,47(1):81-95
Existence of dynamics for infinitely many hard-spheres inv dimensions is proven in a set of full equilibrium measure.Singular unbounded perturbations are considered with pair potentials diverging as (x – a)–, >2 anda is the hard-core diameter. Long range forces are allowed with potentials decreasing at infinity asx
, <v. The result corrects and generalizes a proof given in a previous paper by the same authors.Research partially supported by a CNR fellowship Posit. 204530.Research partially supported by a CNR fellowship. 相似文献
7.
C. Marchioro A. Pellegrinotti M. Pulvirenti 《Communications in Mathematical Physics》1978,58(2):113-129
We study some properties of the time evolution of an infinite one dimensional hard cores system with singular two body interaction. We show that the Liouville operator is essentially antiselfadjoint on the algebra of local observables. Some consequences of this result are also discussed.Research partially supported by the Consiglio Nazionale delle Ricerche, G.N.F.M. 相似文献
8.
G. Pulvirenti 《Journal of Optimization Theory and Applications》1971,7(2):109-117
Existence of solutions is proved for a minimum problem for a control system described by a linear, hyperbolic partial differential equation. The cost function is an integral depending on a distributed control.This research was supported by the Consiglio Nazionale delle Ricerche, Rome, Italy. 相似文献
9.
Relationships between the classical KMS condition and the time evolution for classical systems are discussed. 相似文献
10.
We derive a representation formula for the solutions of the navier-Stokes flow in three dimensions in absence of boundary in terms of stochastic current lines. This pictures generalizes an analogous one given in two dimensions and on the other hand the classical Lafrangian picture for the Euler flow. We prove a Vanishing viscosity limit for the whole structure 相似文献