Results 1 to 10 of about 992,317 (219)

Effective average action in statistical physics and quantum field theory [PDF]

, 2001
An exact renormalization group equation describes the dependence of the free energy on an infrared cutoff for the quantum or thermal fluctuations. It interpolates between the microphysical laws and the complex macroscopic phenomena.
Bergerhoff B., Berges J., Bonanno A., Bonini M., Bonini M., Campostrini M., CHRISTOF WETTERICH, Cornelias J., Cornelias J., Guida R., Hasenfratz A., Kadanoff L.P., Keller G., Li B., Nicoll J. F., Reuter M., Reuter M., Tetradis N., Zinn S.Y.   +18 more
core   +6 more sources

Developing an action concept inventory

Physical Review Physics Education Research, 2016
We report on progress towards the development of an Action Concept Inventory (ACI), a test that measures student understanding of action principles in introductory mechanics and optics.
Lachlan P. McGinness, C. M. Savage
doaj   +3 more sources

A tmQCD mixed-action approach to flavour physics

EPJ Web of Conferences, 2018
We discuss a mixed-action approach in which sea quarks are regularised using non-perturbatively O(a) improved Wilson fermions, while a fully-twisted tmQCD action is used for valence quarks.
Herdoíza Gregorio, Pena Carlos, Preti David, Romero José Ángel, Ugarrio Javier   +4 more
doaj   +2 more sources

Gender gaps and gendered action in a first-year physics laboratory [PDF]

Physical Review Physics Education Research, 2016
[This paper is part of the Focused Collection on Gender in Physics.] It is established that male students outperform female students on almost all commonly used physics concept inventories.
James Day, Jared B. Stang, N. G. Holmes, Dhaneesh Kumar, D. A. Bonn   +4 more
doaj   +2 more sources

Equivariance, Variational Principles, and the Feynman Integral [PDF]

Symmetry, Integrability and Geometry: Methods and Applications, 2008
We argue that the variational calculus leading to Euler's equations and Noether's theorem can be replaced by equivariance and invariance conditions avoiding the action integral.
George Svetlichny
doaj   +7 more sources

The Long-Term Efficacy of “Social Buffering” in Artificial Social Agents: Contextual Affective Perception Matters

Frontiers in Robotics and AI, 2022
In dynamic (social) environments, an affective state of “stress” can be adaptive and promote agent wellbeing, but maladaptive if not appropriately regulated.
Imran Khan, Lola Cañamero, Lola Cañamero   +2 more
doaj   +1 more source

Causality in Discrete Time Physics Derived from Maupertuis Reduced Action Principle

Entropy, 2021
Causality describes the process and consequences from an action: a cause has an effect. Causality is preserved in classical physics as well as in special and general theories of relativity.
Roland Riek, Atanu Chatterjee
doaj   +1 more source

A Dynamical, Radically Embodied, and Ecological Theory of Rhythm Development

Frontiers in Psychology, 2022
Musical rhythm abilities—the perception of and coordinated action to the rhythmic structure of music—undergo remarkable change over human development.
Parker Tichko, Ji Chul Kim, Edward W. Large, Edward W. Large, Edward W. Large   +4 more
doaj   +1 more source

An algorithm for discovering Lagrangians automatically from data [PDF]

PeerJ Computer Science, 2015
An activity fundamental to science is building mathematical models. These models are used to both predict the results of future experiments and gain insight into the structure of the system under study.
Daniel J.A. Hills, Adrian M. Grütter, Jonathan J. Hudson   +2 more
doaj   +2 more sources

Multiple-Relaxation-Time Lattice Boltzmann Simulation of Soret and Dufour Effects on the Thermosolutal Natural Convection of a Nanofluid in a U-Shaped Porous Enclosure

Energies, 2023
This article reports an investigation of the Soret and Dufour effects on the double-diffusive natural convection of Al2O3-H2O nanofluids in a U-shaped porous enclosure.
Md. Mahadul Islam, Md Farhad Hasan, Md. Mamun Molla   +2 more
doaj   +1 more source