| Autor: |
Warren, Samuel, Wang, Yuchen, Benavides-Riveros, Carlos L., Mazziotti, David A. |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Phys. Rev. Lett. 133, 080202 (2024) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.133.080202 |
| Popis: |
We present an exact ansatz for the eigenstate problem of mixed fermion-boson systems that can be implemented on quantum devices. Based on a generalization of the electronic contracted Schr\"odinger equation (CSE), our approach guides a trial wave function to the ground state of any arbitrary mixed Hamiltonian by directly measuring residuals of the mixed CSE on a quantum device. Unlike density-functional and coupled-cluster theories applied to electron-phonon or electron-photon systems, the accuracy of our approach is not limited by the unknown exchange-correlation functional or the uncontrolled form of the exponential ansatz. To test the performance of the method, we study the Tavis-Cummings model, commonly used in polaritonic quantum chemistry. Our results demonstrate that the CSE is a powerful tool in the development of quantum algorithms for solving general fermion-boson many-body problems. |
| Databáze: |
arXiv |
| Externí odkaz: |
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