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研究生: 徐偉程
HSU, WEI-CHENG
論文名稱: 非保角變換下 f(R) 重力的熱力學性質
Thermodynamics of f(R) Gravity with Disformal Relation
指導教授: 耿朝強
Geng, Chao-Qiang
口試委員: 何小剛
He, Xiao-Gang
張敬民
CHEUNG, KING-MAN
陳泉宏
Chen, Chuan-Hung
學位類別: 碩士
Master
系所名稱: 理學院 - 物理學系
Department of Physics
論文出版年: 2017
畢業學年度: 105
語文別: 英文
論文頁數: 26
中文關鍵詞: 宇宙學修正重力理論非保角變換熱力學
外文關鍵詞: cosmology, disformal, f(R)gravity, thermodynamics
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  • 這篇文章研究f(R) 重力的熱力學性質以及非保角變換。此一轉換符合γ_μν = A(ϕ,X)*g_μν + B(ϕ,X)*∂_μ{ϕ}∂_ν{ϕ}的形式,且滿足閔考斯基平直時空的假設γ_μν = η_μν。轉換關係中的ϕ 是非保角變換之純量場,而X 則是ϕ 的動能項。FLRW
    宇宙的廣義第一及第二熱力學定律可以被推導出。經由非保角變換關係式,哈
    伯參數包含物質中的非保角變換場。


    We study thermodynamics in f(R) gravity theory with the disformal transformation.The transformation which is applied to the matter Lagrangian has the formγ_μν = A(ϕ,X)*g_μν + B(ϕ,X)*∂_μ{ϕ}∂_ν{ϕ}with the assumption of the Minkowski matter metric γ_μν = η_μν, where ϕ is the disformal scalar and X is the corresponding kinetic term of ϕ. The generalized first and second laws of the thermodynamics in the Friedmann-Lemaître-Robertson-Walker (FLRW) universe could be verified. Through the disformal relation, the Hubble parameter contains the disformal field which defines the effectively varying equation of state for matter.

    1 Introduction 1 2 f(R) Gravity with Disformal Relation 3 2.1 Field Equation 3 2.2 FLRW Universe 4 3 Thermodynamics in Jodarn Frame 7 3.1 Non-equilibrium Description of Thermodynamics in f(R) Gravity 7 3.1.1 1st Law in Non-equilibrium Description 7 3.1.2 2nd Law in Non-equilibrium Description 10 3.2 Equilibrium Description of Thermodynamics in f(R) Gravity 11 3.2.1 1st Law in Equilibrium Description 11 3.2.2 2nd Law in Equilibrium Description 12 3.2.3 Relation Between Equilibrium And Non-equilibrium Descriptions 13 4 Thermodynamics in Einstein Frame 14 4.1 Conformal Transformation 14 4.2 1st Law in Einstein Frame 16 4.3 2nd Law in Einstein Frame 17 4.4 Thermodynamics Relation Between Two Frames 18 5 Discussion 19 6 Conclusion 23 Bibliography 25

    [1] J. D. Bekenstein, Phys. Rev. D 7, 2333 {1973). doi:10.1103/PhysRevD.7.2333
    [2] J. M. Bardeen, B. Carter and S. W. Hawking, Commun. Math. Phys. 31, 161 (1973). doi:10.1007/BF01645742
    [3] T. Jacobson, Phys. Rev. Lett. 75, 1260 (1995) Doi:10.1103/PhysRevLett. 75.1260 [gr-qc/9504004].
    [4] G. W. Gibbons and S. W. Hawking, Phys. Rev. D 15, 2738 (1977). doi:10.1103/PhysRevD.15.2738
    [5] A. Einstein, Sitzungsber. Preuss. Akad. Wiss. Berlin (Math. Phys. ) 1917, 142 (1917).
    [6] R. G. Cai and S. P. Kim, JHEP 0502, 050 (2005) doi: 10.1088/1126-6708/2005/02/050 [hep-th/0501055].
    [7] A. G. Riess et al. [Supernova Search Team], Astron. J. 116, 1009 (1998) doi:10.1086/300499 [astro-ph/9805201].
    [8] S. Perlmutter et al. [Supernova Cosmology Project Collaboration], Astrophys. J. 517, 565 (1999) doi:10.1086/307221 [astro-ph/9812133].
    [9] C. Eling, R. Guedens and T. Jacobson, Phys. Rev. Lett. 96, 121301 (2006) doi:10.1103/PhysRevLett.96.121301 [gr-qc/0602001].
    [10] M. Akbar and R. G. Cai, Phys. Lett. B 635, 7 (2006) doi:10.1016/j.physletb. 2006.02.035 [hep-th/0602156].
    [11] M. Akbar and R. G. Cai, Phys. Lett. B 648, 243 (2007) doi: 10.1016/ j.physletb.2007.03.005 [gr-qc/0612089].
    [12] S. F. Wu, B. Wang and G. H. Yang, Nucl. Phys. B 799, 330 (2008) doi: 10.1016/j.nuclphysb.2008.01.013 [arXiv:0711.1209 [hep-th]].
    [13] S. F. Wu, B. Wang, G. H. Yang and P. M. Zhang, Class. Quant. Grav. 25, 235018 (2008) doi:10.1088/0264-9381/25/23/235018 [arXiv:0801.2688 [hepth]].
    [14] K. Bamba and C. Q. Geng, Phys. Lett. B 679, 282 (2009) doi:10.1016/j.physletb.2009.07.039 [arXiv:0901.1509 [hep-th]].
    [15] R. G. Cai and L. M. Cao, Phys. Rev. D 75, 064008 (2007) doi:10.1103/PhysRevD.75.064008 [gr-qc/0611071].
    [16] K. Bamba, C. Q. Geng and S. Tsujikawa, Phys. Lett. B 688, 101 (2010) doi: 10.1016/j.physletb.2010.03.070 [arXiv:0909.2159 [gr-qc]].
    [17] K. Bamba and C. Q. Geng, JCAP 1006, 014 (2010) doi:10.1088/1475-7516/2010/06/014 [arXiv:1005.5234 [gr-qc]].
    [18] J. D. Bekenstein, Phys. Rev. D 48, 3641 (1993) doi:10.1103/PhysRevD. 48.3641 [gr-qc/9211017].
    [19] N. Kaloper, Phys. Lett. B 583, 1 (2004) doi:10.1016/j.physletb.2004.01.005 [hep-ph/0312002].
    [20] R. M. Wald, Phys. Rev. D 48, no. 8, R3427 (1993) doi:10.1103/PhysRevD.48.R3427 [gr-qc/9307038].
    [21] V. Iyer and R. M. Wald, Phys. Rev. D 50, 846 (1994) doi:10.1103/PhysRevD.50.846 [gr-qc/9403028].
    [22] R. Brustein, D. Gorbonos and M. Hadad, Phys. Rev. D 79, 044025 (2009)doi:10.1103/PhysRevD.79.044025 [arXiv:0712.3206 [hep-th]].

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