کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1851186 1528821 2014 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Goldstone modes in the neutron star core
ترجمه فارسی عنوان
حالت های گلدستون در هسته ستاره نوترونی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
چکیده انگلیسی

We studied the effect of the diverse Goldstone boson modes in the transport properties of dense neutron matter. The two Goldstone bosons associated with density oscillations of the neutron and electron + proton fluids, called superfluid phonons  , mix and couple strongly to electrons reducing their mean free time and suppressing their contribution to transport coefficients. For typical neutron star temperatures in the range T=106–109 KT=106–109 K, the Goldstone modes associated with rotational symmetry, called angulons, couple weakly to each other and to electrons and, consequently, have anomalously large mean free paths and can contribute to both diffusive and ballistic transport of heat and momentum. Still, their contribution is smaller that coming from the electrons on account of their smaller density. We speculate that long-wavelength superfluid phonons and angulons can play a role in neutron star seismology, and lead to interesting phenomenology especially since angulons couple to magnetic fields and have anisotropic dispersion relations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 735, 30 July 2014, Pages 340–343
نویسندگان
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