Results 111 to 120 of about 5,978,686 (296)

Constraints on metric-Palatini gravity from QPO data

European Physical Journal C: Particles and Fields
In this work, we study metric-Palatini gravity extended by the antisymmetric part of the affine curvature. This gravity theory leads to general relativity plus a geometric Proca field.
Elham Ghorani, Samik Mitra, Javlon Rayimbaev, Beyhan Puliçe, Farruh Atamurotov, Ahmadjon Abdujabbarov, Durmuş Demir   +6 more
doaj   +1 more source

Resistance to Overdoping Allows Over 2000 S cm−1 Conductivity in P(g3BTTT) With Anion‐Exchange Doping

Advanced Materials, EarlyView.
Anion‐exchange doping of conjugated polymers is an effective way to achieve high conductivities. Here, we report over 2000 S cm−1 electrical conductivity for doped P(g3BTTT). In addition, we show that P(g3BTTT) sustains exceptionally high doping levels without any drop in the charge mobility.
Basil Hunger, Maximilian M. Horn, Eva Röck, Diego Rosas Villalva, Lize Bynens, Jochen Vanderspikken, Christina Kousseff, Silène Gobeil, Olivier Bardagot, Nesibe Akmanşen‐Kalayci, Sarah H. Tolbert, Iain McCulloch, Wouter Maes, Demetra Tsokkou, Natalie Banerji   +14 more
wiley   +1 more source

Dynamics of Intermediate Mass Black Holes in Star Clusters

, 2004
We have followed the evolution of multi-mass star clusters containing massive central black holes by N-body simulations on the GRAPE6 computers of Tokyo University. We find a strong cluster expansion and significant structural changes of the clusters.
Baumgardt, H., Portegies Zwart, S.F., McMillan, S.L.W., Makino, J., Ebisuzaki, T.   +4 more
openaire   +4 more sources

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

Advanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena, J. Terence Blaskovits, Kun‐Han Lin, Denis Andrienko   +3 more
wiley   +1 more source

DAVOS: Dwarf Active Galactic Nuclei from Variability for the Origins of Seeds: Properties of Variability-selected Active Galactic Nuclei in the COSMOS Field and Expectations for the Rubin Observatory

The Astrophysical Journal
We study the black hole mass–host galaxy stellar mass relation, M _BH – M _* , of a sample of z < 4 optically variable active galactic nuclei (AGNs) in the COSMOS field. The parent sample of 491 COSMOS AGNs were identified by optical variability from the
Colin J. Burke, Yichen Liu, Charlotte A. Ward, Xin Liu, Priyamvada Natarajan, Jenny E. Greene   +5 more
doaj   +1 more source

Higher-dimensional black holes: Braneworld stars and Hawking radiation. [PDF]

, 2007
In this thesis two aspects of braneworld models are studied. A new attempt at finding the metric of a braneworld black hole within the second Randall-Sundrum model is explored. Branes containing distributions of perfect fluid are embedded in a variety of
Creek, Simon
core  

Trions as Fundamental Species in Chemically Doped Polymer Semiconductors

Advanced Materials, EarlyView.
This work shows that exciton–charge carrier coupling in doped polymer semiconductors gives rise to multi‐particle states, including trions—quasiparticles consisting of two holes and one electron under p‐doping—and bound exciton‐hole pairs, as identified through spectroscopic and theoretical analysis.
Hongmo Li, Henry J. Kantrow, David A. Valverde‐Chávez, Meghan McNeil, Arianna Magni, Mohammad Balooch Qarai, Jude Kpare, Jaden Cramlet, Qiao He, Félix Thouin, Zhihao Feng, Yadong Zhang, Andrew Comstock, Stephen Barlow, Jason Azoulay, Seung Soon Jang, Renaud Demadrille, Martin Heeney, Seth Marder, Nicholas J. Hestand, Alberto Salleo, Frank C. Spano, Carlos Silva‐Acuña, Natalie Stingelin   +23 more
wiley   +1 more source

On black holes in string theory [PDF]

, 2011
PhDThis thesis investigates black holes in string theory through string amplitudes and through gauge-gravity duality. The research presented in this thesis supports the claim that string theory is capable of a consistent quantum-mechanical description
Turton, David J, Turton, David J.
core   +3 more sources

Intermediate-mass Black Hole Formation from Hierarchical Mergers in Galactic Nuclei

The Astrophysical Journal
Dense stellar environments such as nuclear star clusters (NSCs) can dynamically assemble gravitational wave (GW) sources. We consider a population of single stellar mass black holes (BHs) in the inner 0.1 pc of an NSC surrounding a 4 × 10 ^6   M _ ...
Amanda Newton, Sanaea C. Rose, Fulya Kıroğlu, Bao-Minh Hoang, Frederic A. Rasio   +4 more
doaj   +1 more source

Black holes in the gravity/gauge theory correspondence [PDF]

, 2002
The AdS/CFT correspondence provides a microscopic description of black hole thermodynamics. In this thesis, I study the relation between the classical physics of black holes and this microscopic description.
Gregory, James Paul, Gregory, J.P.
core