Aug 8 – 13, 2022
Hörsaalzentrum Poppelsdorf
Europe/Berlin timezone

T-mu phase diagram using classical-quantum hybrid algorithm

Aug 11, 2022, 12:30 PM
CP1-HSZ/1.004 (CP1-HSZ) - HS7 (CP1-HSZ)

CP1-HSZ/1.004 (CP1-HSZ) - HS7


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Oral Presentation Algorithms (including Machine Learning, Quantum Computing, Tensor Networks) Algorithms


Akio Tomiya (IPUT Osaka)


We report results on the Schwinger model at finite temperature and density using a variational algorithm for near-term quantum devices. We adapt β-VQE, a classical-quantum hybrid algorithm with a neural network, to evaluate thermal and quantum expectation values and study the phase diagram for the massless Schwinger model along with the temperature and density. By comparing the exact variational free energy, we find that the variational algorithm works for the Schwinger model for T>0 and μ>0. As a result, we obtain a qualitative picture of the phase diagram for the massless Schwinger model. This talk is based on arXiv:2205.08860.

Primary author

Akio Tomiya (IPUT Osaka)

Presentation materials