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Thoughts on the vacuum energy in the quantum N-portrait

Florian Kühnel

The Oskar Klein Centre for Cosmoparticle Physics, Department of Physics, Stockholm University, AlbaNova, 10691 Stockholm, Sweden

E-mail Address: florian.kuhnel@fysik.su.se

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https://doi.org/10.1142/S0217732315501977Cited by:5 (Source: Crossref)

Abstract

An application of the quantum N-portrait to the Universe is discussed, wherein the spacetime geometry is understood as a Bose–Einstein condensate of N soft gravitons. If near or at the critical point of a quantum phase transition, indications are found that the vacuum energy is partly suppressed by 1/N, as being due to quanta not in the condensate state. Time evolution decreases this suppression, which might have implications for cosmic expansion.

Keywords:

PACS: 98.80.-k

References

1. G. Dvali and C. Gomez, Fortschr. Phys. 61, 742 (2013). Crossref, Web of Science, ADS, Google Scholar
2. G. Dvali and C. Gomez, Eur. Phys. J. C 74, 2752 (2014). Crossref, Web of Science, ADS, Google Scholar
3. G. Dvali and C. Gomez, J. Cosmol. Astropart. Phys. 1401, 023 (2014). Crossref, Web of Science, ADS, Google Scholar
4. G. Dvali and C. Gomez, arXiv:1212.0765. Google Scholar
5. G. Dvali and C. Gomez, arXiv:1307.7630. Google Scholar
6. G. Dvali and C. Gomez, Phys. Lett. B 719, 419 (2013). Crossref, Web of Science, ADS, Google Scholar
7. G. Dvali and C. Gomez, J. Exp. Theor. Phys. 120, 525 (2015). Crossref, Web of Science, ADS, Google Scholar
8. G. Dvali and C. Gomez, arXiv:1406.6014. Google Scholar
9. G. Dvali, C. Gomez, R. S. Isermann, D. Lust and S. Stieberger, Nucl. Phys. B 893, 187 (2015). Crossref, Web of Science, ADS, Google Scholar
10. G. Dvali and C. Gomez, arXiv:1412.8077. Google Scholar
11. G. Dvali, A. Franca, C. Gomez and N. Wintergerst, arXiv:1507.02948. Google Scholar
12. G. Dvali and M. Panchenko, arXiv:1507.08952. Google Scholar
13. R. Casadio, A. Giugno and A. Orlandi, Phys. Rev. D 91, 124069 (2015). Crossref, Web of Science, ADS, Google Scholar
14. R. Casadio, F. Kuhnel and A. Orlandi, arXiv:1502.04703. Google Scholar
15. D. Flassig, A. Pritzel and N. Wintergerst, Phys. Rev. D 87, 084007 (2013). Crossref, Web of Science, ADS, Google Scholar
16. F. Berkhahn, S. Müller, F. Niedermann and R. Schneider, J. Cosmol. Astropart. Phys. 1308, 028 (2013). Crossref, Web of Science, ADS, Google Scholar
17. G. Dvali, D. Flassig, C. Gomez, A. Pritzel and N. Wintergerst, Phys. Rev. D 88, 124041 (2013). Crossref, Web of Science, ADS, Google Scholar
18. R. Brustein, Fortschr. Phys. 62, 255 (2014). Crossref, Web of Science, Google Scholar
19. R. Brustein and A. J. M. Medved, JHEP 1406, 057 (2014). Crossref, Web of Science, ADS, Google Scholar
20. R. Brustein and A. J. M. Medved, JHEP 1402, 116 (2014). Crossref, Web of Science, ADS, Google Scholar
21. R. Casadio and A. Orlandi, JHEP 1308, 025 (2013). Crossref, Web of Science, ADS, Google Scholar
22. R. Casadio, A. Giugno, O. Micu and A. Orlandi, Phys. Rev. D 90, 084040 (2014). Crossref, Web of Science, ADS, Google Scholar
23. F. Kühnel and B. Sundborg, Phys. Rev. D 90, 064025 (2014). Crossref, Web of Science, ADS, Google Scholar
24. F. Kühnel and B. Sundborg, JHEP 1412, 016 (2014). Crossref, Web of Science, ADS, Google Scholar
25. F. Kühnel and M. Sandstad, arXiv:1506.08823. Google Scholar
26. F. Kühnel and M. Sandstad, arXiv:1504.02377. Google Scholar
27. W. G. Unruh, Phys. Rev. Lett. 46, 1351 (1981). Crossref, Web of Science, ADS, Google Scholar
28. M. Visser, arXiv:gr-qc/9311028. Google Scholar
29. C. Barcelo, S. Liberati and M. Visser, Class. Quantum Grav. 18, 1137 (2001). Crossref, Web of Science, ADS, Google Scholar
30. F. Girelli, S. Liberati and L. Sindoni, Phys. Rev. D 78, 084013 (2008). Crossref, Web of Science, ADS, Google Scholar
31. M. Visser, Class. Quantum Grav. 15, 1767 (1998). Crossref, Web of Science, ADS, Google Scholar
32. P. Jain, S. Weinfurtner, M. Visser and C. W. Gardiner, Phys. Rev. A 76, 033616 (2007). Crossref, Web of Science, ADS, Google Scholar
33. C. Barceló, S. Liberati and M. Visser, Living Rev. Relativ. 8, 12 (2005). Crossref, Web of Science, ADS, Google Scholar
34. P. Binetruy, arXiv:1208.4645. Google Scholar