TL;DR
This paper explores how string and M-theory, especially heterotic M-theory, can potentially explain dark energy through mechanisms that keep vacuum energy near zero even after supersymmetry breaking, with higher-order corrections providing a small positive value.
Contribution
It introduces a mechanism within heterotic M-theory that maintains zero vacuum energy post-supersymmetry breaking, suggesting a possible origin for dark energy.
Findings
A mechanism for zero vacuum energy after supersymmetry breaking
Higher-order corrections can produce a small positive vacuum energy
Potential explanation for dark energy within string/M-theory frameworks
Abstract
We discuss vacuum energy in string and M-theory with a focus on heterotic M-theory. In the latter theory a mechanism is described for maintaining zero vacuum energy after supersymmetry breaking. Higher-order corrections can be expected to give a sufficiently small amount of vacuum energy to possibly account for dark energy.
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