Results 11 to 20 of about 746,739 (376)
Reports on Progress in Physics, 2011 In recent years we've seen the birth of a new field known as hamiltonian complexity lying at the crossroads between computer science and theoretical physics.
Osborne, Tobias J.
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Classical and Quantum Gravity, 2005 Due to the complexity of the required numerical codes, many of the new formulations for the evolution of the gravitational fields in numerical relativity are not tested on binary evolutions.
Alcubierre M +16 more
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Floquet Hamiltonian engineering of an isolated many-body spin system [PDF]
Science, 2021 Description Shaping the Hamiltonian Ultracold atoms have proven to be a versatile setting for simulating more complicated quantum systems. However, the type of the simulated Hamiltonian usually cannot be changed once the system has been engineered ...
S. Geier +8 more
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Exploring entanglement and optimization within the Hamiltonian Variational Ansatz [PDF]
PRX Quantum, 2020 Quantum variational algorithms are one of the most promising applications of near-term quantum computers; however, recent studies have demonstrated that unless the variational quantum circuits are configured in a problem-specific manner, optimization of ...
R. Wiersema +5 more
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Effective Hamiltonians and Counterterms for Hamiltonian Truncation
Journal of High Energy Physics, 2023 Abstract We outline a procedure for applying Hamiltonian Truncation to Quantum Field Theories (QFTs) that have UV divergences. To do this, we derive a novel representation of an Effective Hamiltonian which makes manifest some of its important properties (e.g.
Miró, Joan, Ingoldby, James
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Scattering Amplitudes and the Conservative Hamiltonian for Binary Systems at Third Post-Minkowskian Order. [PDF]
Physical Review Letters, 2019 We present the amplitude for classical scattering of gravitationally interacting massive scalars at third post-Minkowskian order. Our approach harnesses powerful tools from the modern amplitudes program such as generalized unitarity and the double-copy ...
Z. Bern +5 more
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Hamiltonian Simulation by Qubitization [PDF]
Quantum, 2016 We present the problem of approximating the time-evolution operatore−iH^tto errorϵ, where the HamiltonianH^=(⟨G|⊗I^)U^(|G⟩⊗I^)is the projection of a unitary oracleU^onto the state|G⟩created by another unitary oracle.
G. Low, I. Chuang
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On the renormalization of Hamiltonians [PDF]
AIP Conference Proceedings, 1999 We introduce a novel method for the renormalization of the Hamiltonian operator in Quantum Field Theory in the spirit of the Wilson renormalization group. By a series of unitary transformations that successively decouples the high-frequency degrees of freedom and partially diagonalizes the high-energy part, we obtain the effective Hamiltonian for the ...
G. Alexanian, Enrique Moreno
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Hamiltonian purification [PDF]
Journal of Mathematical Physics, 2015 The problem of Hamiltonian purification introduced by Burgarth et al. [Nat. Commun. 5, 5173 (2014)] is formalized and discussed. Specifically, given a set of non-commuting Hamiltonians {h1, …, hm} operating on a d-dimensional quantum system ℋd, the problem consists in identifying a set of commuting Hamiltonians {H1, …, Hm} operating on a larger dE ...
Davide Orsucci +6 more
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Optimal Hamiltonian Simulation by Quantum Signal Processing. [PDF]
Physical Review Letters, 2016 The physics of quantum mechanics is the inspiration for, and underlies, quantum computation. As such, one expects physical intuition to be highly influential in the understanding and design of many quantum algorithms, particularly simulation of physical ...
G. Low, I. Chuang
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