Results 111 to 120 of about 310,031 (299)

Dynamics in varying vacuum Finsler–Randers cosmology

European Physical Journal C: Particles and Fields, 2020
In the context of Finsler–Randers theory we consider, for the first time, the cosmological scenario of the varying vacuum. In particular, we assume the existence of a cosmological fluid source described by an ideal fluid and the varying vacuum terms.
G. Papagiannopoulos, S. Basilakos, A. Paliathanasis, Supriya Pan, P. Stavrinos   +4 more
doaj   +1 more source

Cosmological applications in Kaluza-Klein theory

, 2012
The field equations of Kaluza-Klein (KK) theory have been applied in the domain of cosmology. These equations are solved for a flat universe by taking the gravitational and the cosmological constants as a function of time t.
A.A. Nowaya, Biesiada M, Carroll S M, Dolgov A D, Dolgov A D, Gamal G. L. Nashed, Godlowski W, Godlowski W, Kaluza T, Linde A D, M.I. Wanas, Perlmutter S, Polyakov A M, Puetzfeld D, Reiess A G, Reiess A G, Sahni V, Sen S, Wanas M I, Zhu Z H   +19 more
core   +1 more source

Observational Cosmology

, 2004
I discuss the classical cosmological tests-- angular size-redshift, flux-redshift, and galaxy number counts-- in the light of the cosmology prescribed by the intepretation of CMB anisotropies. The discussion is somewhat of a primer for physicists, with emphasis upon the possible systematic uncertainties in the observations and their interpretation ...
openaire   +3 more sources

Analytical and Numerical Soliton Solutions of the Shynaray II‐A Equation Using the G′G,1G$$ \left(\frac{G^{\prime }}{G},\frac{1}{G}\right) $$‐Expansion Method and Regularization‐Based Neural Networks

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Nonlinear differential equations play a fundamental role in modeling complex physical phenomena across solid‐state physics, hydrodynamics, plasma physics, nonlinear optics, and biological systems. This study focuses on the Shynaray II‐A equation, a relatively less‐explored parametric nonlinear partial differential equation that describes ...
Aamir Farooq, H. W. A. Riaz, Sadique Rehman, M. Mamun Miah, Wen Xiu Ma   +4 more
wiley   +1 more source

Amplitude basis for conformal correlators

Journal of High Energy Physics
We present a classification of conformally-invariant three-point tensor structures in d dimensions that parallels the classification of three-particle scattering amplitudes in d + 1 dimensions.
Hayden Lee, Xinkang Wang
doaj   +1 more source

Apparent versus true value of the cosmological constant

, 2012
Supernovae observations strongly support the presence of a cosmological constant, but its value, which we will call apparent, is normally determined assuming that the universe can be accurately described by a homogeneous model.
chen, Pisin, Romano, Antonio Enea
core   +1 more source

Symmetron cosmology

Physical Review D, 2011
42 ...
Hinterbichler, Kurt, Khoury, Justin, Levy, Aaron, Matas, Andrew   +3 more
openaire   +3 more sources

Do cultural taboos regulate hunting in transitioning Indigenous communities? The case of the Idu Mishmi of Northeast India

People and Nature, EarlyView.
Abstract There is rising recognition of resource‐use rights of Indigenous Peoples and Local Communities (IPLCs) within wildlife conservation. Historically, sociocultural institutions ensured wildlife sustainability in many IPLC areas. However, the future viability of such institutions is uncertain as IPLCs change in response to external pressures and ...
Sahil Nijhawan, Achili Mihu, Iho Tapo, Alinji Rondo, Jibi Pulu, Marcus Rowcliffe   +5 more
wiley   +1 more source

A Null Test of the Cosmological Constant

, 2007
We provide a consistency relation between cosmological observables in general relativity with the cosmological constant. Breaking of this relation at any redshift would imply the breakdown of the hypothesis of the cosmological constant as an explanation ...
Chiba, Takeshi, Nakamura, Takashi
core   +1 more source

Centring care as part of Indigenous environmental stewardship: Collective learning through cultural plants

People and Nature, EarlyView.
Abstract Stewardship is broadly defined as ‘universal responsibility of humanity to care for the planet, to ensure that it can continue to provide the essential natural resources for life’. Stewardship practices shape ecosystems, create diverse biocultural landscapes, and can enhance the productivity, availability and health of plants used by ...
Megan Mucioki, Michelle Baumflek, Suzanne Greenlaw, Helen Aderman, Kathy McCovey, Frank K. Lake, Davin Holen, Jennifer Sowerwine, Daniel Sarna‐Wojcicki, Bronwen Powell   +9 more
wiley   +1 more source