Nonlocal String Tachyon as a Model for Cosmological Dark Energy

2004/10/19 by I. Ya. Aref'eva, I. Ya. Aref’eva, Aref'eva, I. Ya. · 1 citation
Computer Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Astrophysics (astro-ph) #Computational Physics and Python Applications #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Theory (hep-th) #astro-ph #gr-qc #hep-th

paper · pdf · doi:10.48550/arxiv.astro-ph/0410443

12pages, 5 figures, talk given at QUARKS-2004, Pushkinskie Gory, Russia, May 2004; Typos corrected, refs. added

openalex publication_date 2004/10/19 · arxiv created 2004/12/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

There are many different phenomenological models describing the cosmological dark energy and accelerating Universe by choosing adjustable functions. In this paper we consider a specific model of scalar tachyon field which is derived from the NSR string field theory and study its cosmological applications. We find that in the effective field theory approximation the equation of state parameter w

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