Journal
SYMMETRY-BASEL
Volume 14, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/sym14010073
Keywords
p-adic strings; p-adic matter; p-adic scalar field; nonlocal cosmology; closed universe
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This paper introduces a new type of matter originating from p-adic strings and investigates its cosmological aspects. By studying the scattering amplitudes and Lagrangian of p-adic open strings, a possible candidate for dark matter is identified.
In this paper, we introduce a new type of matter that has origin in p-adic strings, i.e., strings with a p-adic worldsheet. We investigate some properties of this p-adic matter, in particular its cosmological aspects. We start with crossing symmetric scattering amplitudes for p-adic open strings and related effective nonlocal and nonlinear Lagrangian which describes tachyon dynamics at the tree level. Then, we make a slight modification of this Lagrangian and obtain a new Lagrangian for non-tachyonic scalar field. Using this new Lagrangian in the weak field approximation as a matter in Einstein gravity with the cosmological constant, one obtains an exponentially expanding FLRW closed universe. At the end, we discuss the obtained results, i.e., computed mass of the scalar p-adic particle, estimated radius of related closed universe and noted p-adic matter as a possible candidate for dark matter.
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