Journal of Holography Applications in Physics
Where is the Entropy in DSSYK-De Sitter? Correction to a Wrong Claim
Document Type : Letter
Author
LITP and Department of Physics, Stanford University, Stanford, CA 94305-4060, USA; Google, Mountain View, CA, USA
Abstract
In this paper I explain the relation between the need for observers in de Sitter space and the spontaneous breakdown of time-reversal symmetry. In this paper I explain the relation between the need for observers in de Sitter space and the spontaneous breakdown of time-reversal symmetry.
Keywords
Main Subjects
Article PDF
[1] Y. Sekino and L. Susskind, “Double-Scaled SYK, QCD, and the Flat Space Limit of de Sitter Space,” [arXiv:2501.09423 [hep-th]]
[2] S. Miyashita, Y. Sekino, and L. Susskind, ”DSSYK at Infinite Temperature: The FlatSpace Limit and the ’t Hooft Model”, J. High Energ. Phys. 2025, 107 (2025). DOI: https://doi.org/10.1007/JHEP11(2025)107
[3] G. ’t Hooft, “A Two-Dimensional Model for Mesons,” Nucl. Phys. B 75, 461 (1974). DOI: https://doi.org/10.1142/9789814365802_0008
[4] L. Susskind, “De Sitter Space, Double-Scaled SYK, and the Separation of Scales in the Semiclassical Limit,” JHAP 5, 1, 1 (2025). [arXiv:2209.09999 [hep-th]]
[5] L.D. McLerran, and A. Sen, ”Thermodynamics of QCD in the Large N Limit”, Phys. Rev. D 32, 2794 (1985). DOI: https://doi.org/10.1103/PhysRevD.32.2794
[2] S. Miyashita, Y. Sekino, and L. Susskind, ”DSSYK at Infinite Temperature: The FlatSpace Limit and the ’t Hooft Model”, J. High Energ. Phys. 2025, 107 (2025). DOI: https://doi.org/10.1007/JHEP11(2025)107
[3] G. ’t Hooft, “A Two-Dimensional Model for Mesons,” Nucl. Phys. B 75, 461 (1974). DOI: https://doi.org/10.1142/9789814365802_0008
[4] L. Susskind, “De Sitter Space, Double-Scaled SYK, and the Separation of Scales in the Semiclassical Limit,” JHAP 5, 1, 1 (2025). [arXiv:2209.09999 [hep-th]]
[5] L.D. McLerran, and A. Sen, ”Thermodynamics of QCD in the Large N Limit”, Phys. Rev. D 32, 2794 (1985). DOI: https://doi.org/10.1103/PhysRevD.32.2794
)
Volume 6, Issue 3
March 2026Pages 1-6
- Receive Date: 23 December 2025
- Revise Date: 26 February 2026
- Accept Date: 29 January 2026