Results 81 to 90 of about 197,812 (267)

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

Multi-charged geometries with cosmological constant

Journal of High Energy Physics
Motivated by gauged supergravities, we consider gravitational systems coupled to arbitrary numbers of fluxes and scalar fields. We show that simple ansatze for asymptotically AdS solutions in these systems fully determine the potential for the scalars ...
Rhucha Deshpande, Oleg Lunin
doaj   +1 more source

Exact rotating black hole solutions for f(R) gravity by modified Newman Janis algorithm

European Physical Journal C: Particles and Fields, 2023
We show that the f(R)-gravity theories with constant Ricci scalar in the Jordan/Einstein frame can be described by Einstein or Einstein–Maxwell gravity with a cosmological term and a modified gravitational constant.
Pankaj Chaturvedi, Utkarsh Kumar, Udaykrishna Thattarampilly, Vishnu Kakkat   +3 more
doaj   +1 more source

Varying Constants, Gravitation and Cosmology [PDF]

Living Reviews in Relativity, 2011
Abstract Fundamental constants are a cornerstone of our physical laws. Any constant varying in space and/or time would reflect the existence of an almost massless field that couples to matter. This will induce a violation of the universality of free fall.
openaire   +5 more sources

Cosmological constant, fine structure constant and beyond [PDF]

The European Physical Journal C, 2017
In the present work, we consider the cosmological constant model $ \propto ^{-6}$, which is well motivated from three independent approaches. As is well known, the hint of varying fine structure constant $ $ was found in 1998. If $ \propto ^{-6}$ is right, it means that the cosmological constant $ $ should also be varying. Here, we try to develop
Wei, Hao, Zou, Xiao-Bo, Li, Hong-Yu, Xue, Dong-Ze   +3 more
openaire   +2 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

Holographic self-tuning of the cosmological constant

Journal of High Energy Physics, 2017
We propose a brane-world setup based on gauge/gravity duality in which the four-dimensional cosmological constant is set to zero by a dynamical self-adjustment mechanism. The bulk contains Einstein gravity and a scalar field. We study holographic RG flow
Christos Charmousis, Elias Kiritsis, Francesco Nitti   +2 more
doaj   +1 more source

The Age and Origin of Block Deposits in the Victorian Alps, Australia

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Large periglacial block deposits are found in the mountains of southeastern Australia. Despite their widespread distribution, their mode of formation and age are poorly understood. These landforms hold considerable potential to shed light on the nature of cooling during glacial periods. In this paper we present a new study of block deposits in
Timothy T. Barrows, Michelle S. Worland, Julian Murton, Stephanie C. Mills, L. Keith Fifield   +4 more
wiley   +1 more source

Gravitational deflection of light in the Schwarzschild -de Sitter space time

, 2010
Recent studies suggest that the cosmological constant affects the gravitational bending of photons although the orbital equation for light in Schwarzschild-de Sitter space time is free from cosmological constant.
Arunava Bhadra, C. W. Misner, Kabita Sarkar, M. Ishak, Swarnadeep Biswas   +4 more
core   +1 more source

Integrating multimodal data and machine learning for entrepreneurship research

Strategic Entrepreneurship Journal, EarlyView.
Abstract Research Summary Extant research in neuroscience suggests that human perception is multimodal in nature—we model the world integrating diverse data sources such as sound, images, taste, and smell. Working in a dynamic environment, entrepreneurs are expected to draw on multimodal inputs in their decision making.
Yash Raj Shrestha, Vivianna Fang He
wiley   +1 more source