Birth of the Universe from the Landscape of String Theory

TL;DR

This paper predicts a unique, stable wavefunction for the universe with a small cosmological constant from string theory's landscape, without using the anthropic principle, by analyzing tunneling and supersymmetry breaking in moduli space.

Contribution

It introduces a novel approach to derive the universe's wavefunction and cosmological constant from string theory landscape without anthropic reasoning, highlighting tunneling effects and supersymmetry breaking.

Findings

Predicted a small cosmological constant $oxed{ ext{~}(rac{ ext{pi}}{l_p N})^2}$.

Identified a discrete spectrum of bound states with energies $oxed{ ext{~}(rac{s ext{pi}}{l_p N})^2}$.

Demonstrated spontaneous supersymmetry breaking due to bound states.

Abstract

We show that a unique, most probable and stable solution for the wavefunction of the universe, with a very small cosmological constant $\Lambda_1 \simeq (\frac{\pi}{l_p N})^2$, can be predicted from the supersymmetric minisuperspace with $N$ vacua, of the landscape of string theory without reffering to the antropic principle. Due to the nearest neighbor tunneling in moduli space lattice, the $N$-fold degeneracy of vacua is lifted and a discrete spectrum of bound state levels over the whole minisuperspace emerges. $SUSY$ is spontaneously broken by these bound states, with discrete nonzero energy levels $\Lambda_s \simeq (\frac{s \pi}{l_p N})^2$, $s = 1,2,..$.