Results 21 to 30 of about 370,786 (279)
Automatic differentiable numerical renormalization group
Physical Review Research, 2022 Machine learning techniques have recently gained prominence in physics, yielding a host of new results and insights. One key concept is that of backpropagation, which computes the exact gradient of any output of a program with respect to any input.
Jonas B. Rigo, Andrew K. Mitchell
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On the holographic renormalization group [PDF]
Journal of High Energy Physics, 2000 14 pages, no ...
Erik Verlinde +4 more
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Leading all-loop quantum contribution to the effective potential in general scalar field theory
Journal of High Energy Physics, 2023 The RG equation for the effective potential in the leading log (LL) approximation is constructed which is valid for an arbitrary scalar field theory in 4 dimensions.
D. I. Kazakov +2 more
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Neural Monte Carlo renormalization group
Physical Review Research, 2021 The key idea behind the renormalization group (RG) transformation is that properties of physical systems with very different microscopic makeups can be characterized by a few universal parameters.
Jui-Hui Chung, Ying-Jer Kao
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Quantum renormalization group [PDF]
Physical Review D, 2016 The observed IR and the spectator UV particles of a regulated, cutoff quantum field theory are entangled by their interactions; hence, the IR sector can be described by the help of the density matrix only. The tree-level renormalized trajectory is obtained for a self-interacting scalar field theory, containing the mixed state contributions. One needs a
Nagy, Sándor +2 more
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Asymptotic freedom and higher derivative gauge theories
Journal of High Energy Physics, 2021 The ultraviolet completion of gauge theories by higher derivative terms can dramatically change their behavior at high energies. The requirement of asymptotic freedom imposes very stringent constraints that are only satisfied by a small family of higher ...
M. Asorey, F. Falceto, L. Rachwał
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Journal of Computational Chemistry, Volume 44, Issue 3, Page 190-198, January 30, 2023., 2023 Actinoid tetroxide molecules AnO4 (An = Ac – Cm) are investigated by the multi‐configurational DMRG approach. The Natural Orbital Plots show the number of local An‐5f electrons, and thereby the oxidation states, at one glance. The 5f orbital's increasing energetic stability and spatial immersion in the actinide cores along the series of actinoids ...
Jun‐Bo Lu +5 more
wiley +1 more source
Cage‐size effects on the encapsulation of P2 by fullerenes
Journal of Computational Chemistry, Volume 44, Issue 3, Page 268-277, January 30, 2023., 2023 Strategies to stabilize P2 avoiding its own dimerization involve transition metals and Lewis bases. Here, we show that the judicious selection of a fullerene size yields a stable endohedral with an intact triple bond. The thermodynamic, geometrical, and interaction consequences are discussed in light of DFT calculations.
Enric Sabater +3 more
wiley +1 more source
Towards general scalar-Yukawa renormalisation group equations at three-loop order
Journal of High Energy Physics, 2021 For arbitrary four-dimensional quantum field theories with scalars and fermions, renormalisation group equations in the MS ¯ $$ \overline{\mathrm{MS}} $$ scheme are investigated at three-loop order in perturbation theory.
Tom Steudtner
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A non-perturbative real-space renormalization group scheme for the spin-1/2 XXX Heisenberg model [PDF]
Phys. Rev. B 64, 174408 (2001), 1999 In this article we apply a recently invented analytical real-space renormalization group formulation which is based on numerical concepts of the density matrix renormalization group. Within a rigorous mathematical framework we construct non-perturbative renormalization group transformations for the spin-1/2 XXX Heisenberg model in the finite ...
arxiv +1 more source