The Jordan-Wigner transformation permits one to convert spin 1/2 operators into spinless fermion ones, or vice versa. In some cases, it transforms an interacting spin Hamiltonian into a noninteracting fermionic one, which is exactly solved at the mean-field level. Even when the resulting fermionic Hamiltonian is interacting, its mean-field solution can provide surprisingly accurate energies and correlation functions.
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October 2024
Background: Persons experiencing homelessness (PEH) are vulnerable emergency department (ED) patients due to high rates of multi-comorbidity and mortality, as well as a lack of follow up care. Communication of test results pending at discharge (TPAD) is an important area of post-ED follow up care. We examined phone access, successful contact, and change in treatment among PEH and non-PEH with TPAD from the ED.
View Article and Find Full Text PDFBackground: Emergency departments (EDs) are often patients' first point of contact with the health care system. Race, ethnicity, and language all influence factors leading up to ED visits and patient experiences within the ED. There is limited evidence showing how race, ethnicity, and language interact to shape ED experiences, particularly during the COVID-19 pandemic when EDs were extremely strained.
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