کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8183855 | 1527110 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modification of hadronic spectral functions under extreme conditions: An approach based on QCD sum rules and the maximum entropy method
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Modification of hadronic spectral functions under extreme conditions: An approach based on QCD sum rules and the maximum entropy method Modification of hadronic spectral functions under extreme conditions: An approach based on QCD sum rules and the maximum entropy method](/preview/png/8183855.png)
چکیده انگلیسی
Studies of quarkonium spectral functions at finite temperature, based on an approach combining QCD sum rules and the maximum entropy method are briefly reviewed. QCD sum rules for heavy quarkonia incorporate finite temperature effects in form of changing values of gluonic condensates that appear in the operator product expansion. These changes depend on the energy density and pressure at finite temperature, which we extract from quenched lattice QCD calculations. The maximum entropy method then allows us to obtain the most probable spectral function from the sum rules, without having to introduce any specific assumption about its functional form. Our findings suggest that the charmonium ground states of both S-wave and P-wave channels dissolve into the continuum already at temperatures around or slightly above the critical temperature Tc, while the bottomonium states are less influenced by temperature effects, surviving up to about 2.5Tc or higher for S-wave and up to about 2.0Tc for P-wave states.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics A - Volume 914, 20 September 2013, Pages 512-516
Journal: Nuclear Physics A - Volume 914, 20 September 2013, Pages 512-516
نویسندگان
Philipp Gubler, Kei Suzuki, Kenji Morita, Makoto Oka,