کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10722399 | 1033736 | 2012 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analogue surface gravity near the QCD chiral phase transition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Analogue surface gravity near the QCD chiral phase transition Analogue surface gravity near the QCD chiral phase transition](/preview/png/10722399.png)
چکیده انگلیسی
Using the formalism of relativistic acoustic geometry we study the expanding chiral fluid in the regime of broken chiral symmetry near the QCD chiral phase transition temperature Tc. The dynamics of pions below Tc is described by the equation of motion for a massless scalar field propagating in curved spacetime similar to an open FRW universe. The metric tensor depends locally on the soft pion dispersion relation and the four-velocity of the fluid. In the neighbourhood of the critical point an analogue trapped region forms with the analogue trapped horizon as its boundary. We show that the associated surface gravity diverges near the critical point as κâ¼(TcâT)â1. Hence, if the horizon forms close to the critical temperature the analogue Hawking temperature may be comparable with or even larger than the background fluid temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 718, Issue 1, 15 November 2012, Pages 223-227
Journal: Physics Letters B - Volume 718, Issue 1, 15 November 2012, Pages 223-227
نویسندگان
Neven BiliÄ, Dijana ToliÄ,