It is known that some 2D spin-lattice Hamiltonians are “universal” simulators, in the sense that they can simulate any target Hamiltonian, but only at the cost of an exponential overhead. Here, the ...

April 25, 2026 • After President Trump and Congress cut certain Medicaid funding to Planned Parenthood in last year's budget, some clinics have started offering aesthetic services, including Botox, to ...