Zobrazeno 1 - 10
of 15 235
pro vyhledávání: '"Christianson, A."'
Publikováno v:
Icarus vol.416 (2024) pg.22
We present a chemical kinetics model of the solid-phase chemical evolution of a comet, beginning with a long period of cold-storage in the Oort Cloud, followed by five orbits that bring the comet close to the Sun. The chemical model is based on an ea
Externí odkaz:
http://arxiv.org/abs/2408.15509
Autor:
Lechowicz, Adam, Christianson, Nicolas, Sun, Bo, Bashir, Noman, Hajiesmaili, Mohammad, Wierman, Adam, Shenoy, Prashant
We study carbon-aware spatiotemporal workload management, which seeks to address the growing environmental impact of data centers. We formalize this as an online problem called spatiotemporal online allocation with deadline constraints ($\mathsf{SOAD
Externí odkaz:
http://arxiv.org/abs/2408.07831
Autor:
Clements, Eleanor M., Ovchinnikov, Dmitry, Raghuvanshi, Parul R., Cooper, Valentino R., Okamoto, Satoshi, Christianson, Andrew D., Paddison, Joseph A. M., Ortiz, Brenden R., Calder, Stuart, May, Andrew F., Xu, Xiaodong, Yan, Jiaqiang, McGuire, Michael A.
Cleavable metallic antiferromagnets may be of use for low-dissipation spintronic devices; however, few are currently known. Here we present orthorhombic MnRhBi3 as one such compound and present a thorough study of its physical properties. Exfoliation
Externí odkaz:
http://arxiv.org/abs/2407.00690
Autor:
Paddison, Joseph A. M., Bouaziz, Juba, May, Andrew F., Zhang, Qiang, Calder, Stuart, Abernathy, Douglas, Staunton, Julie B., Blügel, Stefan, Christianson, Andrew D.
Magnetic skyrmion crystals are traditionally associated with non-centrosymmetric crystal structures; however, it has been demonstrated that skyrmion crystals can be stabilized by competing interactions in centrosymmetric crystals. To understand and o
Externí odkaz:
http://arxiv.org/abs/2406.04524
Autor:
Gao, Shang, Pasco, Chris, Omar, Otkur, Zhang, Qiang, Pajerowski, Daniel M., Ye, Feng, Frontzek, Matthias, May, Andrew F., Stone, Matthew B., Christianson, Andrew D.
A codimension-two spiral spin-liquid is a correlated paramagnetic state with one-dimensional ground state degeneracy hosted within a three-dimensional lattice. Here, via neutron scattering experiments and numerical simulations, we establish the exist
Externí odkaz:
http://arxiv.org/abs/2405.18973
We study the design of risk-sensitive online algorithms, in which risk measures are used in the competitive analysis of randomized online algorithms. We introduce the CVaR$_\delta$-competitive ratio ($\delta$-CR) using the conditional value-at-risk o
Externí odkaz:
http://arxiv.org/abs/2405.09859
Autor:
Park, Pyeongjae, Sala, G., Pajerowski, Daniel M., May, Andrew F., Kolopus, James A., Dahlbom, D., Stone, Matthew B., Halász, Gábor B., Christianson, Andrew D.
Publikováno v:
Phys. Rev. Research 6, 033184 (2024)
Using the framework of semi-classical Landau-Lifshitz dynamics (LLD), we conduct a systematic investigation of the temperature-dependent spin dynamics in the S = 1/2 Heisenberg square-lattice antiferromagnet (SqAF). By performing inelastic neutron sc
Externí odkaz:
http://arxiv.org/abs/2405.08897
Autor:
Christianson, Hans, Toth, John
For sequences of quantum ergodic eigenfunctions, we define the quantum flux norm associated to a codimension $1$ submanifold $\Sigma$ of a non-degenerate energy surface. We prove restrictions of eigenfunctions to $\Sigma$, realized using the quantum
Externí odkaz:
http://arxiv.org/abs/2404.02296
Autor:
Park, Pyeongjae, Ghioldi, E. A., May, Andrew F., Kolopus, James A., Podlesnyak, Andrey A., Calder, Stuart, Paddison, Joseph A. M., Trumper, A. E., Manuel, L. O., Batista, Cristian D., Stone, Matthew B., Halasz, Gabor B., Christianson, Andrew D.
Publikováno v:
Nature Communications 15, 7264 (2024)
The S = 1/2 triangular lattice antiferromagnet (TLAF) is a paradigmatic example of frustrated quantum magnetism. An ongoing challenge involves understanding the influence of exchange anisotropy on the collective behavior within such systems. Using in
Externí odkaz:
http://arxiv.org/abs/2403.03210
Autor:
Lechowicz, Adam, Christianson, Nicolas, Sun, Bo, Bashir, Noman, Hajiesmaili, Mohammad, Wierman, Adam, Shenoy, Prashant
We introduce and study a family of online metric problems with long-term constraints. In these problems, an online player makes decisions $\mathbf{x}_t$ in a metric space $(X,d)$ to simultaneously minimize their hitting cost $f_t(\mathbf{x}_t)$ and s
Externí odkaz:
http://arxiv.org/abs/2402.14012