Thermodynamics and cosmological constant of non-local field theories from p-adic strings

Tirthabir Biswas, Jose A.R. Cembranos, Joseph I Kapusta

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


We develop the thermodynamics of field theories characterized by non-local propagators. We analyze the partition function and main thermodynamic properties arising from perturbative thermal loops. We focus on the p-adic models associated with the tachyon phenomenology in string theories. We reproduce well known features of these theories, but also obtain many new results. In particular, we explain how to maintain consistency of such non-local theories by avoiding the appearance of ghosts at finite temperature. As a consequence of this fact, the vacuum energy in p-adic theories becomes positive. It is also hierarchically suppressed, and we explore the parameter space where it is consistent with the observed value of the cosmological constant.

Original languageEnglish (US)
Article number048
JournalJournal of High Energy Physics
Issue number10
StatePublished - Dec 8 2010


  • Bosonic strings
  • Cosmology of theories beyond the SM
  • String duality
  • Thermal field theory


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