Hadron bubble evolution into the quark sea

Details Hadron bubble evolution into the quark sea Hadron bubble evolution into the quark sea

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990phrvd..41.2449f&link_type=abstract

Physical Review D (Particles and Fields), Volume 41, Issue 8, 15 April 1990, pp.2449-2461

Physics

17

Scientific paper

A solution is presented for the evolution of hadron bubbles which nucleate in the quark sea if there is a first-order quark-hadron phase transition at a temperature Tc on the order of 100 MeV. We make three assumptions: (1) the dominant mechanism for transport of latent heat is radiative, e.g., neutrinos; (2) the distance between nucleation sites is greater than the neutrino mean free path; and (3) the effects of hydrodynamic flow can be neglected. Bubbles nucleate with a characteristic radius 1 fm/Δ, where Δ is a dimensionless parameter for the undercooling (we take Δ>=10-4, so that the expansion of the Universe can be neglected). We argue that bubbles grow stably and remain spherical until the radius becomes as large as the neutrino mean free path, l~=10 cm. The growth then becomes diffusion limited and the bubbles become unstable to formation of dendrites, or fingerlike structures, because latent heat can diffuse away more easily from long fingers than from spheres. We study the nonlinear evolution of structure with a ``geometrical model'' and argue that the hadron bubbles ultimately look like stringy seaweed. The percolation of seaweed-shaped bubbles can leave behind regions of quark phase that are quite small. In fact, one might expect the typical scale to be LQ=l~=10 cm. Protons can easily diffuse out of such small regions (and neutrons back in). Thus, these instabilities can lead to important modifications of inhomogeneous nucleosynthesis, which requires LQ>~1 m.

Affiliated with

Also associated with

No associations

Rating

Hadron bubble evolution into the quark sea does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Hadron bubble evolution into the quark sea, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hadron bubble evolution into the quark sea will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1383287