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An answer is a detected singularity with its exponent, or such a bound.","problem_ref":"f98c6077c7bf30ee96d8d474f278781ee9ab4b0f3185abeadd4a8a958d175fd5","references":"","settled_by":"High-resolution calorimetry or thermal expansion through $T*$ on crystals in which torque or neutron onsets are measured on the same piece.","status_note":"Resonant ultrasound (2013) found an elastic anomaly along $T*(p)$, and torque magnetometry (2017) and polarized neutron data indicate symmetry breaking near $T*$, but no calorimetric anomaly at $T*$ has been resolved and the neutron results are disputed.","title":"Is the pseudogap temperature $T*$ a thermodynamic phase 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