Path Resummations and the Fermion Sign Problem
... “graphs”, rather than “paths”. The latter, being rooted in Feynman’s “realspace imaginary-time” path-integral (PI) theory [2–4], has been the paradigmatic approach to simulating quantum systems at finite temperature. For Fermion systems, however, there persists the infamous sign problem [5]. In the p ...
... “graphs”, rather than “paths”. The latter, being rooted in Feynman’s “realspace imaginary-time” path-integral (PI) theory [2–4], has been the paradigmatic approach to simulating quantum systems at finite temperature. For Fermion systems, however, there persists the infamous sign problem [5]. In the p ...
Reversible vs. Quantum Computing
... considered as logic gates differ from traditional logic gates in that the same physical hardware can act as a different gate at different times. For example, after being used as an NDRAG(A:0→1) gate, the same NFET can later be used as an NDRAG(A:1→0) gate, which will undo any change to B, if G is st ...
... considered as logic gates differ from traditional logic gates in that the same physical hardware can act as a different gate at different times. For example, after being used as an NDRAG(A:0→1) gate, the same NFET can later be used as an NDRAG(A:1→0) gate, which will undo any change to B, if G is st ...
Nitrate and Nitrite Ultraviolet Actinometers - SUNY-ESF
... nitrate concentration was increased to 100 mM for absorption measurements made above 330 nm, while nitrite was increased to 10 mM for measurements above 400 nm. All absorbance measurements were made in a 10 cm quartz cell using a Hewlett Packard UV– visible spectrophotometer (model HP 8453). Absorpt ...
... nitrate concentration was increased to 100 mM for absorption measurements made above 330 nm, while nitrite was increased to 10 mM for measurements above 400 nm. All absorbance measurements were made in a 10 cm quartz cell using a Hewlett Packard UV– visible spectrophotometer (model HP 8453). Absorpt ...
What is matter? The fundamental ontology of atomism and structural
... is reason to assume that the scheme that we set out in this paper will also work for quantum field theory: a primitive ontology of permanent point particles that are characterized by the spatial relations in which they stand and a dynamical structure that captures the change in these spatial relatio ...
... is reason to assume that the scheme that we set out in this paper will also work for quantum field theory: a primitive ontology of permanent point particles that are characterized by the spatial relations in which they stand and a dynamical structure that captures the change in these spatial relatio ...
An Introduction to Applied Quantum Mechanics in the Wigner Monte
... Right after the birth of the Schrödinger equation, other formulations (and interpretations) of quantum mechanics appeared, sheding light on aspects that were hardly understandable in the standard formalism. In this perspective, the work of E. Wigner stands out among these alternative (but completel ...
... Right after the birth of the Schrödinger equation, other formulations (and interpretations) of quantum mechanics appeared, sheding light on aspects that were hardly understandable in the standard formalism. In this perspective, the work of E. Wigner stands out among these alternative (but completel ...
Haag`s Theorem in Renormalisable Quantum Field Theories
... • First, all approaches to construct quantum field models in a way seen as mathematically sound and rigorous employ methods from operator theory and stochastic analysis, the latter only in the Euclidean case. This is certainly natural given the corresponding heuristically very successful notions use ...
... • First, all approaches to construct quantum field models in a way seen as mathematically sound and rigorous employ methods from operator theory and stochastic analysis, the latter only in the Euclidean case. This is certainly natural given the corresponding heuristically very successful notions use ...
Elec-‐ph. and ph.-‐ph. coupling in semiconductors and bismuth
... 1. Obtain matrices U and functions ψkn on a Nkw k-point grid from Wannier90 2. Calculate the dynamical matrices and derivatives of VSCF on the Nkw q-point grid reduced by symmetries (ph.x) 3. Use symmetries to obtain the derivatives of VSCF on the full Nkw q-point (dfile_star.f90 already included in ...
... 1. Obtain matrices U and functions ψkn on a Nkw k-point grid from Wannier90 2. Calculate the dynamical matrices and derivatives of VSCF on the Nkw q-point grid reduced by symmetries (ph.x) 3. Use symmetries to obtain the derivatives of VSCF on the full Nkw q-point (dfile_star.f90 already included in ...
New Class of Quantum Error-Correcting Codes for a Bosonic Mode
... We construct a new class of quantum error-correcting codes for a bosonic mode, which are advantageous for applications in quantum memories, communication, and scalable computation. These “binomial quantum codes” are formed from a finite superposition of Fock states weighted with binomial coefficient ...
... We construct a new class of quantum error-correcting codes for a bosonic mode, which are advantageous for applications in quantum memories, communication, and scalable computation. These “binomial quantum codes” are formed from a finite superposition of Fock states weighted with binomial coefficient ...
PDF - at www.arxiv.org.
... After exploring the quantum correlations, we show that the same models of lightmatter interactions that were used to generate them can be simulated in a much broader regime of coupling strengths. The exploration of these models outside their native regimes is not only of fundamental interest, but wi ...
... After exploring the quantum correlations, we show that the same models of lightmatter interactions that were used to generate them can be simulated in a much broader regime of coupling strengths. The exploration of these models outside their native regimes is not only of fundamental interest, but wi ...
Nonlinear response of a driven vibrating nanobeam in the quantum...
... dynamical variable which moves in an anharmonic potential. Depending on the strain being below ( < c ) or above ( > c ) the critical value, a monostable or bistable situation can be created. The conditions for macroscopic quantum tunnelling to occur have been estimated for the bistable case. I ...
... dynamical variable which moves in an anharmonic potential. Depending on the strain being below ( < c ) or above ( > c ) the critical value, a monostable or bistable situation can be created. The conditions for macroscopic quantum tunnelling to occur have been estimated for the bistable case. I ...
Spin-orbit coupling effects in two
... by the presence of the spin-orbit coupling? In general, the usual (isotropic) exchange changes its magnitude while a new, functionally different form of exchange, called anisotropic, appears, breaking the spin-rotational symmetry. Such changes are a nuisance from the perspective of the error correcti ...
... by the presence of the spin-orbit coupling? In general, the usual (isotropic) exchange changes its magnitude while a new, functionally different form of exchange, called anisotropic, appears, breaking the spin-rotational symmetry. Such changes are a nuisance from the perspective of the error correcti ...
Full Text - University of Arizona
... optical potential depends on the atom’s internal spin state [22]. The lattice’s morphology can now be modified through variation of the laser polarization, as well as intensity, lattice phase, etc. The earliest proposals for quantum logic in optical lattices via controlled collisions involved transp ...
... optical potential depends on the atom’s internal spin state [22]. The lattice’s morphology can now be modified through variation of the laser polarization, as well as intensity, lattice phase, etc. The earliest proposals for quantum logic in optical lattices via controlled collisions involved transp ...
