Fig. 4: Many-body thermal broadening.
From: Fingerprints of supersymmetric spin and charge dynamics observed by inelastic neutron scattering
Background-subtracted scattered intensities measured for BPCC at mz = 0.5 and at low (a, c) and intermediate (b, d) temperatures, integrated over momentum transfers qh ∈ [ − 0.625, − 0.375] and shown for sectors q⊥ = π (a, b) and q⊥ = 0 (c, d). The error bars indicate one standard deviation. In both q⊥ sectors one observes a dramatic increase in the spectral weight of the t0 continuum at energies below the T = 0 edge. The solid blue line shows the ladder spectrum (l-MPS) and the dashed red line the spectral function of a single hole in a t-J chain (c-MPS), both computed by zero-temperature MPS in the upper row and by finite-temperature MPS in the lower row, and with the same momentum integration, data binning and equivalent resolution as in experiment.
