Results 41 to 50 of about 1,114,269 (358)

Causality in physical processes [PDF]

open access: yes, 2021
A mathematical model is presented that describes how the diverse phenomena in nature can arise from a common foundation rooted in an objective framework of relational causality. Key equations of conventional physical theories are derived anew. Rigorous derivations are shown for such fundamental relationships as the Schrödinger equation, Bohr’s formula ...
openaire   +1 more source

Physics-informed dynamic mode decomposition

open access: yesProceedings of the Royal Society A, 2023
In this work, we demonstrate how physical principles—such as symmetries, invariances and conservation laws—can be integrated into the dynamic mode decomposition (DMD).
Peter J. Baddoo   +4 more
semanticscholar   +1 more source

Breakdown of the linear approximation in the perturbative analysis of heat conduction in relativistic systems [PDF]

open access: yes, 1998
We analyze the effects of thermal conduction in a relativistic fluid just after its departure from spherical symmetry, on a time scale of the order of relaxation time. Using first order perturbation theory, it is shown that, as in spherical systems, at a
A. Di Prisco   +23 more
core   +2 more sources

Granger causality in the frequency domain: derivation and applications [PDF]

open access: yesRevista Brasileira de Ensino de Física
Physicists are starting to work in areas where noisy signal analysis is required. In these fields, such as Economics, Neuroscience, and Physics, the notion of causality should be interpreted as a statistical measure.
Vinicius Lima   +6 more
doaj   +2 more sources

Climate Change: Linear and Nonlinear Causality Analysis

open access: yesStats, 2023
The goal of this study is to detect linear and nonlinear causal pathways toward climate change as measured by changes in global mean surface temperature and global mean sea level over time using a data-based approach in contrast to the traditional ...
Jiecheng Song, Merry H. Ma
semanticscholar   +1 more source

On the Precision of a Length Measurement [PDF]

open access: yes, 2007
We show that quantum mechanics and general relativity imply the existence of a minimal length. To be more precise, we show that no operational device subject to quantum mechanics, general relativity and causality could exclude the discreteness of ...
C.A. Mead   +24 more
core   +3 more sources

NAO Seasonal Forecast Using a Multivariate Air–Sea Coupled Deep Learning Model Combined with Causal Discovery

open access: yesAtmosphere, 2023
The North Atlantic Oscillation (NAO) is a major climatic phenomenon in the Northern Hemisphere, but the underlying air–sea interaction and physical mechanisms remain elusive.
Bin Mu   +4 more
doaj   +1 more source

Causal Asymmetry Across Cultures: Assigning Causal Roles in Symmetric Physical Settings [PDF]

open access: yesFrontiers in Psychology, 2011
Causal cognition in the physical domain has been treated for a long time as if it were (1) objective and (2) independent of culture. Despite some evidence to the contrary, however, these implicit assumptions have been rarely ever explored systematically.
Bender, Andrea, Beller, Sieghard
openaire   +4 more sources

Kramers-Kronig, Bode, and the meaning of zero

open access: yes, 2011
The implications of causality, as captured by the Kramers-Kronig relations between the real and imaginary parts of a linear response function, are familiar parts of the physics curriculum.
Bode H. W.   +7 more
core   +1 more source

Operator ordering and causality

open access: yes, 2011
It is shown that causality violations [M. de Haan, Physica 132A, 375, 397 (1985)], emerging when the conventional definition of the time-normal operator ordering [P.L.Kelley and W.H.Kleiner, Phys.Rev.
Fleischhauer M   +13 more
core   +1 more source

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