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We introduce the Loschmidt amplitude as a powerful tool to perform spectroscopy of generic many-body wave functions and use it to interrogate the wave function obtained after ramping the transverse… Click to show full abstract
We introduce the Loschmidt amplitude as a powerful tool to perform spectroscopy of generic many-body wave functions and use it to interrogate the wave function obtained after ramping the transverse field quantum Ising model through its quantum critical point. Previous results are confirmed and a more complete understanding of the population of defects and of the effects of magnon-magnon interaction or finite-size corrections is obtained. The influence of quantum coherence is clarified.
Keywords:
wave function;
physics;
spectroscopy;
amplitude wave;
loschmidt amplitude
Journal Title: Physical Review B
Year Published: 2020
Link to full text (if available)
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Journal Title: Physical Review B
Year Published: 2020
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!