Relativistic Modified Newtonian Dynamics from String Theory?

TL;DR

This paper proposes a string theory-based model where neutrinos interact with D0-branes, leading to vector fields similar to those in TeVeS, and suggests neutrinos could explain dark matter and dark energy phenomena.

Contribution

It introduces a string theory framework that naturally produces TeVeS-like vector fields and links neutrinos to dark matter and dark energy contributions.

Findings

Neutrinos can be captured by D0-branes, coupling with recoil vector fields.

The model reproduces features of the Cosmic Microwave Background spectrum.

Neutrinos may induce non-perturbative dark energy contributions.

Abstract

We argue that TeVeS-like vector fields appear naturally in certain string theory backgrounds involving D0-branes, as a result of the recoil velocity field, expressing the interaction of neutrino string matter with point-like branes. However, the similarity with TeVeS models is restricted only to the bi-metric properties of space time, namely the difference of the background metric from the one felt by (some) matter fields interacting, in a topologically non-trivial manner, with the D0-brane defects. In our approach, neutrinos appear as dark matter candidates that could be ``captured'' by the D0 branes, as a result of stringy properties, and thus couple with the recoil-vector fields. Moreover, we argue in support of a possibly preferential role of neutrinos in inducing novel non-perturbative contributions to ``vacuum'' (dark) energy, in addition to their ordinary dark matter contribution. In fact, the role of neutrinos as providing substantial contributions to dark matter and dark energy components of the Universe, suggested by our approach, appears also to be necessitated by the need to reproduce the peaks in the Cosmic Microwave Background radiation spectrum, as claimed recently in the literature. Thus, our framework may be viewed as providing a microscopic explanation of such phenomenological conclusions concerning TeVeS-like, Lorentz-violating models.