Tootfinder

🔊 #NowPlaying on BBCRadio2's #OwainWynEvans
Cat Burns:
🎵 alone
#CatBurns
https://open.spotify.com/track/6wpOHVSrinXhKqF4EBbpuS

My colleague Alex Ruane demoed for us today the interactive IPCC6 #ClimateChange graphic that shows how #climate has evolved over our parents , our, and how it will evolve over our children’s lifetimes.
You can tailor it to your own family with names, birth years, and people outlines.
It makes a powerful reminder of how different the world of our grandparents was than the world of our children will be.
You can download your #ClimateLegacy picture to use as you like
https://svs.gsfc.nasa.gov/webapps/climate-legacies/

This https://arxiv.org/abs/2401.15404 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Relativistic single-electron wavepacket in quantum electromagnetic fields: Quantum coherence, correlations, and the Unruh effect
Conventional formulation of QED since the 50s works very well for stationary states and for scattering problems, but with newly arisen challenges from the 80s on, where real time evolution of particles in a nonequilibrium setting are required, and quantum features such as coherence, dissipation, correlation and entanglement in a system interacting with its quantum field environment are sought after, new ways to formulate QED suitable for these purposes beckon. In this paper we present a lineari…

🔊 #NowPlaying on BBCRadio2's #RobBeckett
Cat Burns:
🎵 alone
#CatBurns
https://open.spotify.com/track/6wpOHVSrinXhKqF4EBbpuS

This https://arxiv.org/abs/2404.08493 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Projected Augmented Waves (PAW) inspired mixed basis sets for small molecules
The success behind many pseudopotential methods such as Projected Augmented Waves (PAW) and Phillips-Kleinman pseudopotential methods is that these methods are all electron methods in disguise. For the Phillips Kleinman and PAW methods we show that there is an all electron formulation. In the all electron formulation there are regular low wavevector wavefunctions and several, specially chosen, high wavevector wavefunctions that are specialized to the atomic environment. Using this as inspiratio…

Green and Kubo forge the arrow of time
Stefano Baroni
https://arxiv.org/abs/2404.09291 https://arxiv.org/pdf/2404.09291

Green and Kubo forge the arrow of time
Transport theory describes the response of a macroscopic current to a thermodynamic force, thus producing entropy and apparently violating time-reversal symmetry. In this note I report a pedagogical derivation of the Green-Kubo formula for transport coefficients that highlights the intrinsically dynamical nature of this formula and showcases the relation between the apparent breach of time-reversal symmetry and the non-commutativity of the low-frequency / low-wavevector limits of the conserved-…

This https://arxiv.org/abs/2404.00100 has been replaced.
link: https://scholar.google.com/scholar?q=a

Magnetic properties of the spiral spin liquid and surrounding phases in the square lattice XY model
Spiral spin liquids possess a subextensively degenerate ground-state manifold, represented by a continuum of energy minima in reciprocal space. Since a small change of the spiral state wavevector requires a global change of the spin configuration in real space, it is a priori unclear how such systems can fluctuate within the degenerate ground state manifold. Only recently it was proposed that momentum vortices are responsible for the liquidity of the spiral phase and that these systems are clos…

This https://arxiv.org/abs/2404.00100 has been replaced.
link: https://scholar.google.com/scholar?q=a

Magnetic properties of the spiral spin liquid and surrounding phases in the square lattice XY model
Spiral spin liquids possess a subextensively degenerate ground-state manifold, represented by a continuum of energy minima in reciprocal space. Since a small change of the spiral state wavevector requires a global change of the spin configuration in real space, it is a priori unclear how such systems can fluctuate within the degenerate ground state manifold. Only recently it was proposed that momentum vortices are responsible for the liquidity of the spiral phase and that these systems are clos…

🔊 #NowPlaying on BBCRadio2's #OJBorg
Cat Burns:
🎵 alone
#CatBurns
https://open.spotify.com/track/6wpOHVSrinXhKqF4EBbpuS

🔊 #NowPlaying on BBCRadio2's #OwainWynEvans
Cat Burns:
🎵 alone
#CatBurns
https://open.spotify.com/track/6wpOHVSrinXhKqF4EBbpuS