TL;DR
This paper explores how supersymmetry in 2+1 dimensions with gravity can lead to a zero cosmological constant without the need for equal boson and fermion masses, challenging traditional assumptions.
Contribution
It demonstrates that supersymmetry can ensure a vanishing cosmological constant independently of mass degeneracy in lower-dimensional gravity models.
Findings
Supersymmetry guarantees zero cosmological constant in 2+1 dimensions with gravity.
Mass equality between bosons and fermions is not necessary for a vanishing cosmological constant.
The results suggest alternative mechanisms for cosmological constant cancellation in lower-dimensional theories.
Abstract
In 2 + 1 dimensions, in the presence of gravity, supersymmetry can ensure the vanishing of the cosmological constant without requiring the equality of bose and fermi masses.
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