Track topics on Twitter Track topics that are important to you
Resonant exchange is a general process playing a key role in many-body dynamics and transport phenomena, such as spin, charge, or excitation diffusion. The underlying process is described by the resonant exchange cross section. We show that the s-wave scattering, generally thought to contribute mainly in the ultracold (or Wigner) regime, dictates the overall cross section over a broad range of energies. We derive an analytical expression and explain its applicability high above the Wigner regime. In particular, we demonstrate its relationship to the classical capture (Langevin) cross section and apply it to three very different resonant processes: namely, resonant charge transfer, spin flip, and excitation exchange. This expression explains large variations for different isotopes that cannot otherwise be accounted for by the small change in mass. The s-wave signature also allows us to gain information about the Wigner regime from data obtained at much higher temperatures, which is especially advantageous for systems where the ultracold regime is not reachable.
This article was published in the following journal.
Name: Physical review letters
In cuprate superconductors, high magnetic fields have been used extensively to suppress superconductivity and expose the underlying normal state. Early measurements revealed insulatinglike behavior in...
The extension of nonlinear optical techniques to the extreme-ultraviolet (EUV), soft and hard x-ray regime represents one of the open challenges of modern science since it would combine chemical speci...
As cutting-edge emerging electromagnetic (EM)-wave-absorbing materials, the Achilles' Heel of graphenes is vulnerable oxidation under high temperature and oxygen atmosphere, particularly at temperatur...
We realize the quantum regime of a surface acoustic wave (SAW) resonator by demonstrating vacuum Rabi mode splitting due to interaction with a superconducting artificial atom. Reaching the quantum reg...
In many regions globally, buildings designed for harnessing heat during the cold exacerbate thermal exposures during heat waves (HWs) by maintaining elevated indoor temperatures even when high ambient...
Increasing radiation exposure by medical examinations is getting more concerns. For optimal medical imaging, reducing radiation exposure with preservation image quality is important. One o...
To investigate the diagnostic value of ultralow-dose computed tomography in the detection of pulmonary nodules and lung parenchym alterations (e.g. emphysema) compared to standard-dose-CT.
The aim of the SARI study was to describe biomarkers of predisposition to the development of sarcomas in irradiated territory. This study included 120 patients with sarcoma in irradiated t...
The purpose of this study is to determine whether the percentage cases which have ideal mechanical axial alignment using the Vanguard total Knee implant with the Signature cutting blocks i...
The primary goal of the study is to identify biomarkers from the molecular signature predictive of pre-term birth. This will be achieved through high frequency sampling and profiling throu...
A genus of gram-positive bacteria in the family CARNOBACTERIACEAE. They are tolerant to freezing/thawing and high pressure and able to grow at low temperatures.
Bacteria resistant to high temperatures, as in PASTEURIZATION.
Sudden, violent, and often destructive expansion of gases which propagates energy outward, such as a shock wave, ejecting fragments and debris at high velocities.
Differences of opinion or disagreements that may arise, for example, between health professionals and patients or their families, or against a political regime.
A transient left ventricular apical dysfunction or ballooning accompanied by electrocardiographic (ECG) T wave inversions. This abnormality is associated with high levels of CATECHOLAMINES, either administered or endogenously secreted from tumor or during extreme stress.