Results 111 to 120 of about 110,473 (324)

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Constraints on Scalar Phantoms

, 2010
We update the constraints on the minimal model of dark matter, where a stable real scalar field is added to the standard model Lagrangian with a renormalizable coupling to the Higgs field.
E. Aprile, E. W. Kolb, G. Cynolter, Masaki Asano, P. L. Brink, Ryuichiro Kitano   +5 more
core   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

Interaction between Dark Matter and Dark Energy and the Cosmological Coincidence Problem

Advances in High Energy Physics, 2014
We consider a quintessence model of dark energy inspired by scalar-tensor theories of gravity where the scalar field is nonminimally coupled to gravity and dark matter. By considering exponential potential as self-interaction potential, the stability and
Kourosh Nozari, Noushin Behrouz, Narges Rashidi   +2 more
doaj   +1 more source

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

A singlet scalar assisted $$N_{2}$$ N 2 leptogenesis and pseudo-scalar dark matter

European Physical Journal C: Particles and Fields
We study the Leptogenesis and Dark Matter in the presence of an extra singlet complex scalar field in an extended discrete $$\mathcal {Z_{\textrm{3}}}$$ Z 3 symmetry. The vacuum expectation value of the new scalar spontaneously breaks the $$\mathcal {Z_{\
Dilip Kumar Ghosh, Purusottam Ghosh, Koustav Mukherjee, Nimmala Narendra   +3 more
doaj   +1 more source

Sensitivity of Atom Interferometry to Ultralight Scalar Field Dark Matter

Physical Review Letters, 2016
We discuss the use of atom interferometry as a tool to search for Dark Matter (DM) composed of ultra-light scalar fields. Previous work on ultra-light DM detection using accelerometers has considered the possibility of equivalence principle violating effects whereby gradients in the dark matter field can directly produce relative accelerations between ...
Geraci, Andrew A., Derevianko, Andrei
openaire   +5 more sources

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

Advanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

Dynamics of dark matter misalignment through the Higgs portal

Journal of High Energy Physics
A light singlet scalar field feebly coupled through the super-renormalizable Higgs portal provides a minimal and well-motivated realization of ultra-light bosonic dark matter.
Brian Batell, Akshay Ghalsasi, Mudit Rai
doaj   +1 more source

FLRW model coupled with mass less scalar field in f(T) gravity-Two fluid scenario

East European Journal of Physics
In this work, we investigate a cosmological model within the framework of modified teleparallel gravity, known as f(T) gravity, by considering a spatially flat Friedmann-Lemaître-Robertson-Walker (FLRW) Universe filled with two fluids-barotropic matter ...
Vilas B. Raut, Sanjay A. Salve
doaj   +1 more source