Results 51 to 60 of about 62,947 (343)
Big bang of the brane universe [PDF]
, 2001 Big bang of the Friedmann-Robertson-Walker (FRW)-brane universe is studied. In contrast to the spacelike initial singularity of the usual FRW universe, the initial singularity of the FRW-brane universe is point-like from the viewpoint of causality ...
A. Lukas +23 more
core +3 more sources
Advanced Functional Materials, EarlyView.Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana +2 more
wiley +1 more source
Gravitational dipole moment from an exact solution with torsion
New Journal of Physics, 2020 Dipole fields are common in electromagnetism and may be viewed as the result of a positive and negative charge (or pole) which are close together. A dipole field in gravity is not expected to exist because negative mass has never been observed.
R T Hammond
doaj +1 more source
Charged radiation collapse in Einstein–Gauss–Bonnet gravity
European Physical Journal C: Particles and Fields, 2022 We generalise the continual gravitational collapse of a spherically symmetric radiation shell of matter in five dimensional Einstein–Gauss–Bonnet gravity to include the electromagnetic field.
Byron P. Brassel +2 more
doaj +1 more source
A Universal Way to Manipulate Droplet via Light‐Fueled Thermocapillary Convection
Advanced Functional Materials, EarlyView.A non‐contact light‐induced droplet manipulation strategy fueled by mid‐infrared (MIR) light irradiation is introduced. No additional additives and/or complex substrate are required. Here, thermocapillary convection, directly generated by temperature gradient at outer surface of droplet via localized surface heating, plays a key role to propel the ...
Hyesun Hwang +5 more
wiley +1 more source
Gravity with perimeter action and gravitational singularities
Physics Letters B, 2021 16 pages, 3 figures, the references and an extended note are ...
openaire +4 more sources
Advanced Functional Materials, EarlyView.Enthesis injuries are a worldwide healthcare problem. Biomimetic electrospun enthesis fascicle‐inspired scaffolds, with and without nano‐mineralization are developed. Human Mesenchymal Stromal cells (hMSCs) express the most balanced enthesis markers on the non‐mineralized scaffolds.
Alberto Sensini +11 more
wiley +1 more source
Stability of Schwarzschild singularity in non-local gravity
Physics Letters B, 2017 In a previous work, it was shown that all Ricci-flat spacetimes are exact solutions for a large class of non-local gravitational theories. Here we prove that, for a subclass of non-local theories, the Schwarzschild singularity is stable under linear ...
Gianluca Calcagni, Leonardo Modesto
doaj +1 more source
Quantum vacuum effects on the formation of black holes
Journal of High Energy Physics, 2023 We study the backreaction of quantum fields induced through the vacuum polarization and the conformal anomaly on the collapse of a thin shell of dust. It is shown that the final fate of the collapse process depends on the physical properties of the shell,
Moslem Shafiee, Yousef Bahrampour
doaj +1 more source
A Non-singular Theory of Gravity
, 1994 We present a geometrical gravitational theory which reduces to Einstein's theory for weak gravitational potentials and which has a singularity-free analog of the Schwarzschild metric.Comment: 8 pages, RevTeX, 3 figures included in compressed form, UTPT ...
Bernstein +21 more
core +1 more source