Expected boundary vanishings for rank-zero Donaldson–Thomas invariants on the quintic

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Let X5X_5 be the quintic threefold, let HH be its hyperplane class, and set κ=H3=5\kappa=H^3=5. Write Ω‾H\overline{\Omega}_H for the rank-zero invariant with Chern-character arguments displayed below. Expected quintic boundary vanishings. The following vanishings are expected:

Ω‾H(0,H,±(12+1κ)H2,H36)=0,\overline{\Omega}_H\left(0,H,\pm\left(\frac12+\frac1\kappa\right)H^2,\frac{H^3}{6}\right)=0,

and

Ω‾H(0,H,±(12+2κ)H2,(−mκ+16)H3)=0for m=0,−1.\overline{\Omega}_H\left(0,H,\pm\left(\frac12+\frac2\kappa\right)H^2,\left(-\frac{m}{\kappa}+\frac16\right)H^3\right)=0\qquad\text{for }m=0,-1.

These predictions concern stable-pair and rank-zero Donaldson–Thomas invariants near the Castelnuovo bound and are motivated in the source by physical arguments. No resolution status is given for these expected vanishings.

References

Primary source

Sergei Alexandrov, Soheyla Feyzbakhsh, Albrecht Klemm, Boris Pioline and Thorsten Schimannek, “Quantum geometry, stability and modularity”, arXiv:2301.08066 (2024).

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