Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transformation between statistical ensembles in the modelling of nuclear
  fragmentation   We explore the conditions under which the particle number conservation
constraint deforms the predictions of fragmentation observables as calculated
in the grand canonical ensemble. We derive an analytical formula allowing to
extract canonical results from a grand canonical calculation and vice versa.
This formula shows that exact canonical results can be recovered for
observables varying linearly or quadratically with the number of particles,
independent of the grand canonical particle number fluctuations. We explore the
validity of such grand canonical extrapolation for different fragmentation
observables in the framework of the analytical Grand Canonical or Canonical
Thermodynamical Model [(G)CTM] of nuclear multifragmentation. It is found that
corrections to the grand canonical expectations can be evaluated with high
precision, provided the system does not experience a first order phase
transition. In particular, because of the Coulomb quenching of the liquid-gas
phase transition of nuclear matter, we find that mass conservation corrections
to the grand canonical ensemble can be safely computed for typical observables
of interest in experimental measurements of nuclear fragmentation, even if
deviations exist for highly exclusive observables.

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The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin