Time dependence of critical behavior in multifragmentation

Details Time dependence of critical behavior in multifragmentation Time dependence of critical behavior in multifragmentation

2001-11-14

arxiv.org/abs/nucl-th/0111044v3

Phys.Rev. C66 (2002) 024613

Physics

Nuclear Physics

Nuclear Theory

9 pages, 5 figures

Scientific paper

10.1103/PhysRevC.66.024613

We study signatures of critical behavior in microscopic simulations of small, highly excited Lennard-Jones drops. We focus our attention on the behavior of the system at the time of fragment formation (which takes place in phase space) and compare the results with the corresponding ones obtained at asymptotic times (experimentally accessible). The four critical exponents ($\tau$,$\beta$, $\sigma$ and $\gamma$) found at fragmentation time have shown to be stable against time evolution, indicating that the asymptotic stage reflects accurately the physics at fragmentation time. Even though evidence of critical behavior arises from the calculations, we can not affirm that the system is performing a second order like phase transition.

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