Resonant Interaction of Modulation-correlated Quantum Electron Wavepackets with Bound Electron States

Posted by klaurent Caltech

Kavli Affiliate: Amnon Yariv | First 5 Authors: Avraham Gover, Bin Zhang, Du Ran, Reuven Ianconescu, Aharon Friedman | Summary: Free-Electron Bound-Electron Resonant Interaction (FEBERI) is the resonant inelastic interaction of periodically density-bunched free electrons with a quantum two level system. We present a comprehensive relativistic quantum mechanical theory for this interaction in a model […]


Continue.. Resonant Interaction of Modulation-correlated Quantum Electron Wavepackets with Bound Electron States

Resonant Interaction of Modulation-correlated Quantum Electron Wavepackets with Bound Electron States

Posted by klaurent Caltech

Kavli Affiliate: Amnon Yariv | First 5 Authors: Avraham Gover, Bin Zhang, Du Ran, Reuven Ianconescu, Aharon Friedman | Summary: Free-Electron Bound-Electron Resonant Interaction (FEBERI) is the resonant inelastic interaction of periodically density-bunched free electrons with a quantum two level system. We present a comprehensive relativistic quantum mechanical theory for this interaction in a model […]


Continue.. Resonant Interaction of Modulation-correlated Quantum Electron Wavepackets with Bound Electron States

Tuning Advanced LIGO to kilohertz signals from neutron-star collisions

Posted by klaurent MIT

Kavli Affiliate: Lee McCuller | First 5 Authors: Dhruva Ganapathy, Lee McCuller, Jameson Graef Rollins, Evan D. Hall, Lisa Barsotti | Summary: Gravitational waves produced at kilohertz frequencies in the aftermath of a neutron star collision can shed light on the behavior of matter at extreme temperatures and densities that are inaccessible to laboratory experiments. […]


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The Dust-to-Gas Ratio and the Role of Radiation Pressure in Luminous, Obscured Quasars

Posted by klaurent Peking

Kavli Affiliate: Claudio Ricci | First 5 Authors: Hyunsung D. Jun, Roberto J. Assef, Christopher M. Carroll, Ryan C. Hickox, Yonghwi Kim | Summary: The absence of high Eddington ratio, obscured Active Galactic Nuclei (AGN) in local ($zlesssim0.1$) samples of moderate luminosity AGN has generally been explained to result from radiation pressure on the dusty […]


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Topology optimized multi-functional mechanically reconfigurable meta-optics studied at microwave frequencies

Posted by klaurent Caltech

Kavli Affiliate: Andrei Faraon | First 5 Authors: Conner Ballew, Gregory Roberts, Philip Camayd-Muñoz, Maximilien F Debbas, Andrei Faraon | Summary: Metasurfaces advanced the field of optics by reducing the thickness of optical components and merging multiple functionalities into a single layer device. However, this generally comes with a reduction in performance, especially for multifunctional […]


Continue.. Topology optimized multi-functional mechanically reconfigurable meta-optics studied at microwave frequencies

Self-assembling kinetics: Accessing a new design space via differentiable statistical-physics models

Posted by dbos Harvard

Kavli Affiliate: Michael Brenner | First 5 Authors: Carl P. Goodrich, Ella M. King, Samuel S. Schoenholz, Ekin D. Cubuk, Michael Brenner | Summary: The inverse problem of designing component interactions to target emergent structure is fundamental to numerous applications in biotechnology, materials science, and statistical physics. Equally important is the inverse problem of designing […]


Continue.. Self-assembling kinetics: Accessing a new design space via differentiable statistical-physics models

The Occurrence of Rocky Habitable Zone Planets Around Solar-Like Stars from Kepler Data

Posted by klaurent MIT

Kavli Affiliate: Christopher J. Burke | First 5 Authors: Steve Bryson, Michelle Kunimoto, Ravi K. Kopparapu, Jeffrey L. Coughlin, William J. Borucki | Summary: We present occurrence rates for rocky planets in the habitable zones (HZ) of main-sequence dwarf stars based on the Kepler DR25 planet candidate catalog and Gaia-based stellar properties. We provide the […]


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Fast computation of angular power spectra and covariances of high-resolution cosmic microwave background maps using the Toeplitz approximation

Posted by klaurent Cambridge

Kavli Affiliate: Anthony Challinor | First 5 Authors: Thibaut Louis, Sigurd Naess, Xavier Garrido, Anthony Challinor, | Summary: We present a simple approximation that can speed up the computation of the mode-coupling matrices, which are usually the bottleneck for computing unbiased angular power spectra, as well as their associated covariance matrices, of the cosmic microwave […]


Continue.. Fast computation of angular power spectra and covariances of high-resolution cosmic microwave background maps using the Toeplitz approximation

Limitations of CMB B-mode template delensing

Posted by klaurent Cambridge

Kavli Affiliate: Anthony Challinor | First 5 Authors: Antón Baleato Lizancos, Anthony Challinor, Julien Carron, , | Summary: Efforts to detect a primordial $B$-mode of CMB polarization generated by inflationary gravitational waves ought to mitigate the large variance associated with the $B$-modes produced by gravitational lensing, a process known as delensing. A popular approach to […]


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Diffusing wave spectroscopy: a unified treatment on temporal sampling and speckle ensemble methods

Posted by klaurent Caltech

Kavli Affiliate: Changhuei Yang | First 5 Authors: Jian Xu, Ali K. Jahromi, Changhuei Yang, , | Summary: Diffusing wave spectroscopy (DWS) is a well-known set of methods to measure the temporal dynamics of dynamic samples. In DWS, dynamic samples scatter the incident coherent light, and the information of the temporal dynamics is encoded in […]


Continue.. Diffusing wave spectroscopy: a unified treatment on temporal sampling and speckle ensemble methods