The exploration of the universe has recently entered a new era thanks to the multi-
messenger paradigm, characterized by a continuous increase in the quantity and quality of …

In this review we describe our current understanding of the properties of open string
tachyons on an unstable D-brane or brane–antibrane system in string theory. The various …

In this paper we study perturbatively an extension of the Stelle higher derivative gravity
involving an infinite number of derivative terms. We know that the usual quadratic action is …

We propose a field theory for describing the tachyon on a brane–antibrane system near the
minimum of the potential. This field theory realizes two known properties of the tachyon …

On p-adic mathematical physics | p-Adic Numbers, Ultrametric Analysis and Applications Skip
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One of the greatest problems of standard cosmology is the Big Bang singularity. Previously it
has been shown that non-local ghostfree higher-derivative modifications of Einstein gravity …

One of the greatest problems of primordial inflation is that the inflationary space-time is past-
incomplete. This is mainly because Einstein's GR suffers from a space-like Big Bang …

This book is an introductory presentation to the theory of local zeta functions. Viewed as
distributions, and mostly in the archimedean case, local zeta functions are also called …

The boundary of the ordinary open string world sheet is the real line. Along with the usual
open string, one can consider p-adic open strings whose world sheet has as boundary the p …

In these notes we revisit the tachyon lagrangian in the open string field theory using
background independent approach of Witten from 1992. We claim that the tree level …