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On Hermitian manifolds with Bismut-Strominger parallel torsion

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arxiv 2208.03071 v2 pith:XUJQVA4T submitted 2022-08-05 math.DG

classification math.DG
keywords manifoldsbismutparalleltorsionbismut-stromingerhermitiannon-balancedobtain
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In this article, we study Hermitian manifolds whose Bismut-Strominger connection has parallel torsion tensor, which will be called {\em Bismut torsion parallel manifolds,} or {\em BTP} manifolds for short. We obtain a necessary and sufficient condition characterizing this class in terms of the curvature tensor. In particular, Bismut flat or Bismut K\"ahler-like manifolds are {\em BTP} manifolds, known by our earlier results. We also obtain structural results for non-balanced {\em BTP} manifolds, and classification theorems for non-balanced {\em BTP} threefolds and balanced {\em BTP} threefolds.

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Cited by 2 Pith papers

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  1. Compact balanced threefolds and LCK manifolds with constant holomorphic sectional curvature

    math.DG 2026-08 accept novelty 7.0 of 10

    Compact balanced threefolds with nonpositive constant Chern holomorphic sectional curvature are Chern flat (c=0) or Kähler (c<0), and constant-curvature LCK manifolds are Kähler or Hopf-covered.

  2. Almost Calabi-Yau with torsion 6-manifolds and the instanton condition

    math.DG 2025-07 accept novelty 6.0 of 10

    On compact or balanced almost Calabi-Yau 6-manifolds with torsion, the torsion connection is an SU(3) instanton if and only if the torsion is parallel, and the Hull connection is an instanton if and only if the torsio...

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