cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ozawa's Intersubjectivity Theorem as objection to QBism individual agent perspective
Creators: name: Khrennikov, Andrei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: QBism's foundational statement that ``the outcome of a measurement of an observable is personal'' is in the straight contraversion with Ozawa's Intersubjectivity Theorem (OIT). The latter (proven within the quantum formalism) states that two observers, agents within the QBism terminology, performing joint measurements of the same observable $A$ on a system $S$ in the state $ψ$ should get the same outcome $A=x.$ In Ozawa's terminology, this outcome is intersubjective and it can't be treated as personal. This is the strong objection to QBism which can't survive without updating its principles. The essential aspect in understanding of the OIT-impact on QBism's foundations takes the notion of quantum observable. This paper comprises the complementary discussion highlighting the difference between the accurate, von Neumann, and inaccurate, noisy, quantum observables which are represented by PVMs and POVMs respectively. Moreover, we discuss the OIT-impact on the Copenhagen interpretation of quantum mechanics.
title: ÐÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ½Ð¾Ðµ Ð¸Ð½Ð¶ÐµÐ½ÐµÑÐ½Ð¾Ðµ Ð±Ð»Ð°Ð³Ð¾ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð¾ ÐºÐ¾ÑÑÐµÐ´Ð¶Ð½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐµÐ»ÐºÐ° Ð¢ÑÐ¼ÐµÐ½ÑÐºÐ¾Ð¹ Ð¾Ð±Ð»Ð°ÑÑÐ¸
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: ÐÐ»Ð¾ÑÐ¸Ð½, Ð¡ÐµÑÐ³ÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2017
Subjects: Ð´ÑÐµÐ½Ð°Ð¶
Ð¸Ð½Ð¶ÐµÐ½ÐµÑÐ½Ð¾Ðµ Ð±Ð»Ð°Ð³Ð¾ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°
Ð´Ð¾Ð¶Ð´ÐµÐ²Ð°Ñ ÐºÐ°Ð½Ð°Ð»Ð¸Ð·Ð°ÑÐ¸Ñ

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½ Ð¿ÑÐ¾ÐµÐºÑ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ½Ð¾Ð³Ð¾ Ð¸Ð½Ð¶ÐµÐ½ÐµÑÐ½Ð¾Ð³Ð¾ Ð±Ð»Ð°Ð³Ð¾ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð° Ð½Ð°ÑÐµÐ»ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ½ÐºÑÐ°. Ð Ð°Ð·ÑÐ°Ð±Ð°ÑÑÐ²Ð°ÐµÑÑÑ ÑÐ¸ÑÑÐµÐ¼Ð° Ð²Ð¾Ð´Ð¾Ð¿Ð¾Ð½Ð¸Ð¶ÐµÐ½Ð¸Ñ ÑÐµÑÑÐ¸ÑÐ¾ÑÐ¸Ð¸, Ð¿ÑÑÐµÐ¼ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð´Ð¾Ð¶Ð´ÐµÐ²Ð¾Ð¹ ÐºÐ°Ð½Ð°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¸ Ð´ÑÐµÐ½Ð°Ð¶Ð° Ð½Ð° ÑÑÐ°ÑÑÐºÐ°Ñ. ÐÑÐ¿Ð¾Ð»Ð½ÑÐµÑÑÑ Ð²ÐµÑÑÐ¸ÐºÐ°Ð»ÑÐ½Ð°Ñ Ð¿Ð»Ð°Ð½Ð¸ÑÐ¾Ð²ÐºÐ° ÑÐµÑÑÐ¸ÑÐ¾ÑÐ¸Ð¸ Ñ ÑÐµÐ»ÑÑ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼ÑÑ ÑÐºÐ»Ð¾Ð½Ð¾Ð² Ð´Ð»Ñ ÑÑÐ¾ÐºÐ° Ð²Ð¾Ð´Ñ. Ð ÑÐ°Ð¼ÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð° Ð·Ð°Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð° ÑÐ¸ÑÑÐµÐ¼Ð° Ð¾Ð±Ð¾Ð³ÑÐµÐ²Ð° Ð¾ÑÐºÑÑÑÑÑ Ð¿Ð»Ð¾ÑÐ°Ð´Ð¾Ðº Ð½Ð° ÑÐµÑÑÐ¸ÑÐ¾ÑÐ¸Ð¸ ÑÑÐ°ÑÑÐºÐ¾Ð² ÐÐÐ¡. ÐÑÐ¿Ð¾Ð»Ð½ÐµÐ½ Ð¿Ð¾Ð´ÑÐ¾Ð±Ð½ÑÐ¹ ÑÐ°ÑÑÐµÑ Ð¸ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð¾ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²ÑÐ±Ð¾ÑÐ° ÑÐ¸ÑÑÐµÐ¼Ñ Ð¾Ð±Ð¾Ð³ÑÐµÐ²Ð°. Ð Ð°Ð±Ð¾ÑÐ° ÑÐ¾Ð´ÐµÑÐ¶Ð¸Ñ ÑÐµÑÑÐµÐ¶Ð¸, ÑÑÐµÐ¼Ñ Ð¸ ÑÐ°ÑÑÐµÑÑ Ð¸Ð½Ð¶ÐµÐ½ÐµÑÐ½ÑÑ ÑÐ¸ÑÑÐµÐ¼.
Flux quanta driven by high-density currents in low-impurity V3Si and LuNi2B2C: free flux flow and flux-core size effect
Creators: name: Gapud, A. A.
name: Moraes, S.
name: Khadka, R. P.
name: Canfield, P. C.
name: Kogan, V. G.
name: Reyes, A. P.
name: Lumata, L. L.
name: Christen, D. K.
name: Thompson, J. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: High density direct currents (DC) are used to drive flux quanta via the Lorentz force towards a highly ordered "free flux flow" (FFF) dynamic state, made possible by the weak-pinning environment of high-quality, single-crystal samples of two low-Tc superconducting compounds, V3Si and LuNi2B2C. We report the effect of the magnetic field-dependent fluxon core size on flux flow resistivity rho_f. Much progress has been made in minimizing the technical challenges associated with the use of high currents. Attainment of a FFF phase is indicated by the saturation at highest currents of flux-flow dissipation levels that are well below the normal state resistance and have field-dependent values. The field dependence of the corresponding rho_f is shown to be consistent with a prediction based on a model for the decrease of flux core size at higher fields in weak-coupling BCS s-wave materials.
description: More empirical treatment of the magnetoresistive correction of V3Si data by additional measurement and analysis (involving two new coauthors, Favreau and Henderson). End result is the same, making for a stronger manuscript
title: ÐÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ðµ Ð¸Ð½ÑÐµÑÐ²Ð°Ð»Ð° Ð½ÐµÐ¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð½Ð¾ÑÑÐ¸ ÑÑÐ½Ð¾ÑÐ½Ð¾Ð¹ ÑÑÐ¾Ð¸Ð¼Ð¾ÑÑÐ¸
title: Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÑÐºÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ°
titleType: Subtitle
Creators: name: ÐÐ°ÐºÑÐ¸Ð¼Ð¾Ð²Ð°, ÐÐ½Ð°ÑÑÐ°ÑÐ¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2017
Subjects: Ð¾Ð±ÑÐµÐºÑ Ð½ÐµÐ´Ð²Ð¸Ð¶Ð¸Ð¼Ð¾ÑÑÐ¸
Ð·ÐµÐ¼ÐµÐ»ÑÐ½ÑÐ¹ ÑÑÐ°ÑÑÐ¾Ðº
ÑÑÐ°Ð²ÐºÐ° Ð°ÑÐµÐ½Ð´Ñ
Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐ¸ÑÐºÐ¾Ð²
Ð·Ð°ÑÑÐ°ÑÐ½ÑÐ¹ Ð¿Ð¾Ð´Ñ Ð¾Ð´

description: Ð¦ÐµÐ»Ñ ÑÐ°Ð±Ð¾ÑÑ - Ð¾ÑÐµÐ½ÐºÐ° ÑÑÐ½Ð¾ÑÐ½Ð¾Ð¹ ÑÑÐ¾Ð¸Ð¼Ð¾ÑÑÐ¸ Ð¾Ð±ÑÐµÐºÑÐ° Ð½ÐµÐ´Ð²Ð¸Ð¶Ð¸Ð¼Ð¾ÑÑÐ¸. ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ Ð·Ð´Ð°Ð½Ð¸Ðµ Ð¾ÑÐ¸ÑÐ½Ð¾Ð³Ð¾ Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½Ð¸Ñ. Ð Ð¿ÑÐ¾ÑÐµÑÑÐµ ÑÐ°Ð±Ð¾ÑÑ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¾ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÐ½ÐºÐ° ÐºÐ¾Ð¼Ð¼ÐµÑÑÐµÑÐºÐ¾Ð¹ Ð½ÐµÐ´Ð²Ð¸Ð¶Ð¸Ð¼Ð¾ÑÑÐ¸, Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾Ð³Ð¾ Ð²Ð°ÑÐ¸Ð°Ð½ÑÐ° Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¾Ð±ÑÐµÐºÑÐ° Ð½ÐµÐ´Ð²Ð¸Ð¶Ð¸Ð¼Ð¾ÑÑÐ¸. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð²ÑÑÐ²Ð»ÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐµÐ½Ð´ÐµÐ½ÑÐ¸Ð¸ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»ÐµÐ¹, ÑÐ¿Ð¾ÑÐ¾Ð±ÑÑÐ²ÑÑÑÐ¸Ñ Ð¿ÑÐ¾Ð³Ð½Ð¾Ð·Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»Ð¸, Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð° ÑÑÐ°Ð²ÐºÐ° Ð´Ð¸ÑÐºÐ¾Ð½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð´Ð»Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ ÐºÐ¾Ð¼Ð¼ÐµÑÑÐµÑÐºÐ¸Ñ ÑÑÐ½ÐºÑÐ¸Ð¹, Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ ÑÐ°ÑÑÐµÑ ÑÑÑÑÐºÑÑÑÑ Ð´Ð¾ÑÐ¾Ð´ Ð¸ ÑÐ°ÑÑÐ¾Ð´Ð¾Ð², Ð° ÑÐ°ÐºÐ¶Ðµ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐ¸ÑÐºÐ¾Ð². ÐÐ°ÐºÐ»ÑÑÐ¸ÑÐµÐ»ÑÐ½ÑÐ¼ ÑÑÐ°Ð¿Ð¾Ð¼ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ ÑÐ¾Ð³Ð»Ð°ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð² Ð¾ÑÐµÐ½ÐºÐ¸.
Measurements of the Isotopic Ratio 6Li/7Li in Stars with Planets
Creators: name: Ghezzi, L.
name: Cunha, K.
name: Smith, V. V.
name: Margheim, S.
name: Schuler, S.
name: de Araújo, F. X.
name: de la Reza, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: High-resolution (R = 143,000), high signal-to-noise (S/N = 700-1100) Gemini-S bHROS spectra have been analyzed in a search for 6Li in 5 stars which host extrasolar planets. The presence of detectable amounts of 6Li in these mature, solar-type stars is a good monitor of accretion of planetary disk material, or solid bodies themselves, into the outer layers of the parent stars. Detailed profile-fitting of the Li I resonance doublet at lambda 6707.8 A reveals no detectable amounts of 6Li in any star in our sample. The list of stars analyzed includes HD 82943 for which 6Li has been previouly detected at the level of 6Li/7Li = 0.05 +/- 0.02. The typical limits in the derived isotopic fraction are 6Li/7Li <= 0.00-0.02. These upper limits constrain the amount of accreted material to less than ~ 0.02 to 0.5 Jovian masses. The presence of detectable amounts of 6Li would manifest itself as a red asymmetry in the Li I line-profile and the derived upper limits on such asymmetries are discussed in light of three-dimensional hydrodynamic model atmospheres, where convective motions also give rise to slight red asymmetries in line profiles.
description: 33 pages, 7 figures, 6 tables, accepted for publication in ApJ
New lower bounds for the integration of periodic functions
Creators: name: Krieg, David
name: Vybiral, Jan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We study the integration problem on Hilbert spaces of (multivariate) periodic functions. The standard technique to prove lower bounds for the error of quadrature rules uses bump functions and the pigeon hole principle. Recently, several new lower bounds have been obtained using a different technique which exploits the Hilbert space structure and a variant of the Schur product theorem. The purpose of this paper is to (a) survey the new proof technique, (b) show that it is indeed superior to the bump-function technique, and (c) sharpen and extend the results from the previous papers.
The Induced Charge Generated By The Potential Well In Graphene
Creators: name: Milstein, Alexander I.
name: Terekhov, Ivan S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The induced charge density, $ρ_{ind}(\bm r)$, generated in graphene by the potential well of the finite radius $R$ is considered. The result for $ρ_{ind}(\bm r)$ is derived for large distances $r\gg R$. We also obtained the induced charges outside of the radius $r\gg R$ and inside of this radius for subcritical and supercritical regimes. The consideration is based on the convenient representation of the induced charge density via the Green's function of electron in the field.
description: 12 pages, 2 figures, version published in Phys.Rev. B
title: ÐÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸ Ð¿Ð¾ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐµ Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ¸Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ð¹
title: ÑÑÐµÐ±Ð½Ð¾-Ð¼ÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ Ð´Ð»Ñ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð² Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ 080200 "ÐÐµÐ½ÐµÐ´Ð¶Ð¼ÐµÐ½Ñ" (ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ñ (ÑÑÐµÐ¿ÐµÐ½Ñ) "Ð¼Ð°Ð³Ð¸ÑÑÑ")
titleType: Subtitle
Creators: name: ÐÐ¾Ð·Ð»Ð¾Ð²ÑÐºÐ¸Ð¹, ÐÐ»Ð°Ð´Ð¸Ð¼Ð¸Ñ
Publisher: name: ÐÐ·Ð´-Ð²Ð¾ ÐÐ¾Ð»Ð¸ÑÐµÑÐ½. ÑÐ½-ÑÐ°
Year: 2010
Subjects: Ð¼Ð°Ð³Ð¸ÑÑÑÐ°ÑÑÑÐ°
Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ° Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ð¹
ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸
Ð²ÑÑÑÐµÐµ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ðµ
ÑÑÐµÐ±Ð½Ð¸ÐºÐ¸ Ð¸ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ñ Ð´Ð»Ñ Ð²ÑÐ·Ð¾Ð²

description: Ð£ÑÐµÐ±Ð½Ð¾-Ð¼ÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¾Ðµ Ð¿Ð¾ÑÐ¾Ð±Ð¸Ðµ ÑÐ¾Ð´ÐµÑÐ¶Ð¸Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ñ, Ð¾Ð±ÑÐ·Ð°ÑÐµÐ»ÑÐ½ÑÐµ Ð¿ÑÐ¸ ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°ÑÐµÐ»ÑÐ½ÑÑ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼ (ÐÐÐ) Ð¼Ð°Ð³Ð¸ÑÑÑÐ°ÑÑÑÑ, Ð¸ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾ Ð½Ð°ÑÑÐ½Ð¾-Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°ÑÐµÐ»ÑÑÐºÐ¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ¾Ð² Ð¸ Ð¼Ð°Ð³Ð¸ÑÑÑÐ¾Ð² Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ 080200 Â«ÐÐµÐ½ÐµÐ´Ð¶Ð¼ÐµÐ½ÑÂ» Ð²ÑÐ·Ð°Ð¼Ð¸ Ð½Ð° ÑÐµÑÑÐ¸ÑÐ¾ÑÐ¸Ð¸ Ð Ð¾ÑÑÐ¸Ð¹ÑÐºÐ¾Ð¹ Ð¤ÐµÐ´ÐµÑÐ°ÑÐ¸Ð¸, Ð¸Ð¼ÐµÑÑÐ¸Ð¼Ð¸ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½ÑÑ Ð°ÐºÐºÑÐµÐ´Ð¸ÑÐ°ÑÐ¸Ñ.
description: ÐÐµÑÐ°ÑÐ°ÐµÑÑÑ Ð¿Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ ÑÐµÐ´Ð°ÐºÑÐ¸Ð¾Ð½Ð½Ð¾-Ð¸Ð·Ð´Ð°ÑÐµÐ»ÑÑÐºÐ¾Ð³Ð¾ ÑÐ¾Ð²ÐµÑÐ° Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¾Ð³Ð¾ Ð³Ð¾ÑÑÐ´Ð°ÑÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑÐ°.
Disposition Formation and Outcome Evaluation
Creators: name: Grizzard, Matthew
name: Frazer, Rebecca
name: Francemone, Charles
name: Fitzgerald, Kaitlin
name: Henry, Christina
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Arts and Humanities
subject: Mass Communication
subject: Communication
subject: Film and Media Studies
subject: Social and Behavioral Sciences
subject: Entertainment
subject: Morality
subject: Moral Judgment

description: A test of ADT/MSTDR
Fractal initial conditions and natural parameter values in hybrid inflation
Creators: name: Clesse, Sebastien
name: Ringeval, Christophe
name: Rocher, Jonathan
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the initial field values required to produce inflation in the two fields original hybrid model, and its supergravity F-term extension, do not suffer from any fine-tuning problem, even when the fields are restricted to be sub-planckian and for almost all potential parameter values. This is due to the existence of an initial slow-roll violating evolution which has been overlooked so far. Due to the attractor nature of the inflationary valley, these trajectories end up producing enough accelerated expansion of the universe. By numerically solving the full non-linear dynamics, we show that the set of such successful initial field values is connected, of dimension two and possesses a fractal boundary of infinite length exploring the whole field space. We then perform a Monte-Carlo-Markov-Chain analysis of the whole parameter space consisting of the initial field values, field velocities and potential parameters. We give the marginalised posterior probability distributions for each of these quantities such that the universe inflates long enough to solve the usual cosmological problems. Inflation in the original hybrid model and its supergravity version appears to be generic and more probable by starting outside of the inflationary valley. Finally, the implication of our findings in the context of the eternal inflationary scenario are discussed.
description: 16 pages, 16 figures, uses RevTeX. Lyapunov exponents and references added, matches published version
title: ÐÑÐµÐ½ÐºÐ° ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ ÑÐ°ÑÐ¼ÑÑÐ½ÐºÐ° Ð² ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½ÑÑ ÑÑÐ»Ð¾Ð²Ð¸ÑÑ Ñ Ð¾Ð·ÑÐ¹ÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ñ
title: Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ
titleType: Subtitle
Creators: name: ÐÐµÐ¼ÐµÑÐºÐ¾, ÐÐ»ÐµÐ½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2016
Subjects: ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¸Ñ
ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÑ
ÑÑÐ½Ð¾Ðº
ÑÐ°ÑÐ¼Ð°ÑÐµÐ²ÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ¾Ð²Ð°ÑÑ
ÑÐ°ÑÐ¼ÑÑÐ½Ð¾Ðº
Ð´Ð¶ÐµÐ½ÐµÑÐ¸ÐºÐ¸
competition
competitive
market
pharmaceuticals
pharmaceutical market
generics

description: ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÑ ÐÐÐ Â«Ð Ð¾Ð´Ð½Ð¸Ðº ÐÐ´Ð¾ÑÐ¾Ð²ÑÑÂ» Ð² ÑÑÐ½Ð¾ÑÐ½ÑÑ ÑÑÐ»Ð¾Ð²Ð¸ÑÑ ÑÐ¾Ð·ÑÐ¹ÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ñ, Ð·Ð°ÐºÐ¾Ð½Ð¾Ð´Ð°ÑÐµÐ»ÑÐ½ÑÐµ Ð°ÐºÑÑ, ÐºÐ¾ÑÐ¾ÑÑÐµ ÑÐµÐ³Ð»Ð°Ð¼ÐµÐ½ÑÐ¸ÑÑÑÑ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ½Ð¾ÑÑÑ Ð² Ð Ð¾ÑÑÐ¸Ð¹ÑÐºÐ¾Ð¹ Ð¤ÐµÐ´ÐµÑÐ°ÑÐ¸Ð¸. Ð¦ÐµÐ»Ñ ÑÐ°Ð±Ð¾ÑÑ - Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¸Ðµ Ð¾ÑÐµÐ½ÐºÐ¸ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ Ð² ÑÑÐ½Ð¾ÑÐ½ÑÑ ÑÑÐ»Ð¾Ð²Ð¸ÑÑ ÑÐ¾Ð·ÑÐ¹ÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ñ (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ Â«Ð Ð¾Ð´Ð½Ð¸Ðº ÐÐ´Ð¾ÑÐ¾Ð²ÑÑÂ»), Ð° ÑÐ°ÐºÐ¶Ðµ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¹ Ð¸ Ð¼ÐµÑÐ¾Ð´Ð¾Ð² Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ Ð½Ð° Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ð¸. Ð Ð¿ÑÐ¾ÑÐµÑÑÐµ ÑÐ°Ð±Ð¾ÑÑ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ Ð² ÑÑÐ½Ð¾ÑÐ½ÑÑ ÑÑÐ»Ð¾Ð²Ð¸ÑÑ ÑÐ¾Ð·ÑÐ¹ÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ñ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð±ÑÐ»Ð¸ Ð¸Ð·ÑÑÐµÐ½Ñ Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¸ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ñ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð±ÑÐ»Ð¸ Ð¿ÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½Ñ Ð¼ÐµÑÐ¾Ð¿ÑÐ¸ÑÑÐ¸Ñ Ð¿Ð¾ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ Ð¸ÑÑÐ»ÐµÐ´ÑÐµÐ¼Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸.
description: The object of research is the competitiveness of "Spring of Health" under market conditions, legislative acts that regulate competitiveness in the Russian Federation. Objective - To assess the competitiveness of enterprises in market economic conditions (for example, Ltd. "Spring Health"), as well as the development of recommendations and methods for increasing the competitiveness of the enterprise. In the process, a study of competitiveness in the market conditions of management and have been studied practical and theoretical problems of competitiveness. As a result, studies have suggested measures to improve the competitiveness of the investigated companies.
Polymer rheology simulations at the meso- and macroscopic scale
Creators: name: Sultan, Eric
name: Van De Meent, Jan-Willem
name: Somfai, Ellak
name: Morozov, Alexander N.
name: Van Saarloos, Wim
Publisher: name: arXiv
Year: 2010
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We show that simulations of polymer rheology at a fluctuating mesoscopic scale and at the macroscopic scale where flow instabilities occur can be achieved at the same time with dissipative particle dynamics (DPD) technique.} We model the visco-elasticity of polymer liquids by introducing a finite fraction of dumbbells in the standard DPD fluid. The stretching and tumbling statistics of these dumbbells is in agreement with what is known for isolated polymers in shear flows. At the same time, the model exhibits behaviour reminiscent of drag reduction in the turbulent state: as the polymer fraction increases, the onset of turbulence in plane Couette flow is pushed to higher Reynolds numbers. The method opens up the possibility to model nontrivial rheological conditions with ensuing coarse grained polymer statistics.
Neutrino magnetic moment: a window to new physics
Creators: name: Studenikin, Alexander
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A short review on a neutrino magnetic moment is presented.
description: based on the talk presented at the Neutrino Oscillation Workshop, Conca Specchiulla (Otranto, Italy) September 6-13, 2008, to apper in Nucl.Phys.B (Proc.Suppl.)
Two-step hyperparameter optimization method: Accelerating hyperparameter search by using a fraction of a training dataset
Creators: name: Yu, Sungduk
name: Pritchard, Mike
name: Ma, Po-Lun
name: Singh, Balwinder
name: Silva, Sam
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Hyperparameter optimization (HPO) is an important step in machine learning (ML) model development, but common practices are archaic -- primarily relying on manual or grid searches. This is partly because adopting advanced HPO algorithms introduces added complexity to the workflow, leading to longer computation times. This poses a notable challenge to ML applications, as suboptimal hyperparameter selections curtail the potential of ML model performance, ultimately obstructing the full exploitation of ML techniques. In this article, we present a two-step HPO method as a strategic solution to curbing computational demands and wait times, gleaned from practical experiences in applied ML parameterization work. The initial phase involves a preliminary evaluation of hyperparameters on a small subset of the training dataset, followed by a re-evaluation of the top-performing candidate models post-retraining with the entire training dataset. This two-step HPO method is universally applicable across HPO search algorithms, and we argue it has attractive efficiency gains.
 As a case study, we present our recent application of the two-step HPO method to the development of neural network emulators for aerosol activation. Although our primary use case is a data-rich limit with many millions of samples, we also find that using up to 0.0025% of the data (a few thousand samples) in the initial step is sufficient to find optimal hyperparameter configurations from much more extensive sampling, achieving up to 135-times speedup. The benefits of this method materialize through an assessment of hyperparameters and model performance, revealing the minimal model complexity required to achieve the best performance. The assortment of top-performing models harvested from the HPO process allows us to choose a high-performing model with a low inference cost for efficient use in global climate models (GCMs).
Prediction of a spin-polarized two-dimensional electron gas at the LaAlO3/EuO(001) interface
Creators: name: Wang, Yong
name: Niranjan, Manish K.
name: Burton, J. D.
name: An, Joonhee M.
name: Belashchenko, Kirill D.
name: Tsymbal, Evgeny Y.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: First-principles calculations predict the existence of a spin-polarized two-dimensional electron gas (2DEG) at the LaO/EuO interface in a LaAlO3/EuO (001) heterostructure. This polar interface favors electron doping into the Eu-5d conduction bands resulting in a 2DEG formed at the interface. Due to the exchange splitting of the Eu-5d states the 2DEG is spin-polarized below the Curie temperature of EuO. The predicted mechanism for the formation of a spinpolarized 2DEG at the interface between polar and ferromagnetic insulators may provide a robust magnetism of the 2DEG which is interesting for spintronics applications.
Asymptotic Bethe equations for open boundaries in planar AdS/CFT
Creators: name: Correa, D. H.
name: Young, C. A. S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We solve, by means of a nested coordinate Bethe ansatz, the open-boundaries scattering theory describing the excitations of a free open string propagating in $AdS_5\times S^5$, carrying large angular momentum $J=J_{56}$, and ending on a maximal giant graviton whose angular momentum is in the same plane. We thus obtain the all-loop Bethe equations describing the spectrum, for $J$ finite but large, of the energies of such strings, or equivalently, on the gauge side of the AdS/CFT correspondence, the anomalous dimensions of certain operators built using the epsilon tensor of SU(N). We also give the Bethe equations for strings ending on a probe D7-brane, corresponding to meson-like operators in an $\mathcal N=2$ gauge theory with fundamental matter.
description: 30 pages. v2: minor changes and discussion section added, J.Phys.A version.
Non Fermi liquid behavior at flat hot spots from quantum critical fluctuations at the onset of charge- or spin-density wave order
Creators: name: Debbeler, Lukas
name: Metzner, Walter
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We analyze quantum fluctuation effects at the onset of charge or spin density wave order with a $2k_F$ wave vector $\mathbf{Q}$ in two-dimensional metals -- for the special case where $\mathbf{Q}$ connects a pair of hot spots situated at high symmetry points of the Fermi surface with a vanishing Fermi surface curvature. We compute the order parameter susceptibility and the fermion self-energy in one-loop approximation. The susceptibility has a pronounced peak at $\mathbf{Q}$, and the self-energy displays non-Fermi liquid behavior at the hot spots, with a linear frequency dependence of its imaginary part. The real part of the one-loop self-energy exhibits logarithmic divergences with universal prefactors as a function of both frequency and momentum, which may be interpreted as perturbative signatures of power laws with universal anomalous dimensions. As a result, one obtains a non-Fermi liquid metal with a vanishing quasiparticle weight at the hot spots, and a renormalized dispersion relation with anomalous algebraic momentum dependencies near the hot spots.
Preheating After Modular Inflation
Creators: name: Barnaby, Neil
name: Bond, J. Richard
name: Huang, Zhiqi
name: Kofman, Lev
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study (p)reheating in modular (closed string) inflationary scenarios, with a special emphasis on Kahler moduli/Roulette models. It is usually assumed that reheating in such models occurs through perturbative decays. However, we find that there are very strong non-perturbative preheating decay channels related to the particular shape of the inflaton potential (which is highly nonlinear and has a very steep minimum). Preheating after modular inflation, proceeding through a combination of tachyonic instability and broad-band parametric resonance, is perhaps the most violent example of preheating after inflation known in the literature. Further, we consider the subsequent transfer of energy to the standard model sector in scenarios where the standard model particles are confined to a D7-brane wrapping the inflationary blow-up cycle of the compactification manifold or, more interestingly, a non-inflationary blow up cycle. We explicitly identify the decay channels of the inflaton in these two scenarios. We also consider the case where the inflationary cycle shrinks to the string scale at the end of inflation; here a field theoretical treatment of reheating is insufficient and one must turn instead to a stringy description. We estimate the decay rate of the inflaton and the reheat temperature for various scenarios.
description: 34 pages, 10 figures. Accepted for publication in JCAP
Pumping of nuclear spins by the optical solid effect in a quantum dot
Creators: name: Chekhovich, E. A.
name: Makhonin, M. N.
name: Kavokin, K. V.
name: Krysa, A. B.
name: Skolnick, M. S.
name: Tartakovskii, A. I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We demonstrate that efficient optical pumping of nuclear spins in semiconductor quantum dots (QDs) can be achieved by resonant pumping of optically "forbidden" transitions. This process corresponds to one-to-one conversion of a photon absorbed by the dot into a polarized nuclear spin, which also has potential for initialization of hole spin in QDs. Pumping via the "forbidden" transition is a manifestation of the "optical solid effect", an optical analogue of the effect previously observed in electron spin resonance experiments in the solid state. We find that by employing this effect, nuclear polarization of 65% can be achieved, the highest reported so far in optical orientation studies in QDs. The efficiency of the spin pumping exceeds that employing the allowed transition, which saturates due to the low probability of electron-nuclear spin flip-flop.
description: 5 pages, 3 figures, submitted to Phys. Rev. Lett
title: ÐÐ¾ÑÑÐ¾Ð²ÑÐµ Ð³Ð¸Ð´ÑÐ¾ÑÐµÑ Ð½Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ñ Ð½Ð° Ð¯Ð¿Ð¾Ð½ÑÐºÐ¾Ð¼ Ð¼Ð¾ÑÐµ Ð² ÑÐ°Ð¹Ð¾Ð½Ðµ ÐÐ°Ñ Ð¾Ð´ÐºÐ¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
Creators: name: ÐÐ¾ÑÐ¾Ð²Ð¸Ð½Ð°, ÐÐ¸ÐºÑÐ¾ÑÐ¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: Ð¾Ð³ÑÐ°Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾Ðµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ðµ
Ð¿ÑÐ¸ÑÐ°Ð»ÑÐ½Ð¾Ðµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ðµ
Ð¾Ð±ÑÐºÐ½Ð¾Ð²ÐµÐ½Ð½ÑÐ¹ Ð¼Ð°ÑÑÐ¸Ð²
ÑÐ²Ð°Ð¹Ð½ÑÐ¹ ÑÐ¾ÑÑÐ²ÐµÑÐº
Ð½ÐµÑÑÑÐ¸Ð¹ ÑÐ¿ÑÐ½Ñ

description: ÐÐ±ÑÐµÐºÑ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ: Ð¿Ð¾ÑÑÐ¾Ð²ÑÐµ Ð¿ÑÐ¸ÑÐ°Ð»ÑÐ½Ð¾Ðµ Ð¸ Ð¾Ð³ÑÐ°Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾Ðµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ñ Ð² ÑÐ°Ð¹Ð¾Ð½Ðµ Ð¼Ð¾ÑÑÐºÐ¾Ð³Ð¾ ÑÐ¾ÑÐ³Ð¾Ð²Ð¾Ð³Ð¾ Ð¿Ð¾ÑÑÐ° Â«ÐÐ°ÑÐ¾Ð´ÐºÐ°Â». Ð¦ÐµÐ»Ð¸ ÑÐ°Ð±Ð¾ÑÑ: ÑÐ°ÑÑÐµÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ð¾Ð³ÑÐ°Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ Ð¸ Ð¿ÑÐ¸ÑÐ°Ð»ÑÐ½Ð¾Ð³Ð¾ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ð¹. Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½ ÑÐ°ÑÑÐµÑ Ð´Ð²ÑÑ Ð²Ð¸Ð´Ð¾Ð² ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹: Ð¾Ð³ÑÐ°Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾Ðµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ðµ Ð² Ð²Ð¸Ð´Ðµ Ð¼Ð¾Ð»Ð° Ð¸Ð· Ð¾Ð±ÑÐºÐ½Ð¾Ð²ÐµÐ½Ð½ÑÑ Ð¼Ð°ÑÑÐ¸Ð²Ð¾Ð² Ð¸ Ð¿ÑÐ¸ÑÐ°Ð»ÑÐ½Ð¾Ðµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ðµ Ð² Ð²Ð¸Ð´Ðµ Ð²ÑÑÐ¾ÐºÐ¾Ð³Ð¾ ÑÐ²Ð°Ð¹Ð½Ð¾Ð³Ð¾ ÑÐ¾ÑÑÐ²ÐµÑÐºÐ° Ñ Ð¿ÐµÑÐµÐ´Ð½ÐµÐ¹ Ð½ÐµÑÑÑÐµÐ¹ ÑÑÐµÐ½ÐºÐ¾Ð¹. ÐÑÑÑÐµÑÑÐ²Ð»ÑÐµÑÑÑ ÑÐ°ÑÑÐµÑ ÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾ÑÑÐ¸ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ Ñ ÑÑÐµÑÐ¾Ð¼ Ð½Ð°Ð³ÑÑÐ·Ð¾Ðº, Ð´ÐµÐ¹ÑÑÐ²ÑÑÑÐ¸Ñ Ð½Ð° ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ðµ, Ð° ÑÐ°ÐºÐ¶Ðµ ÑÐ°ÑÑÐµÑ Ð¾ÑÐ±Ð¾Ð¹Ð½ÑÑ Ð¸ ÑÐ²Ð°ÑÑÐ¾Ð²Ð½ÑÑ ÑÑÑÑÐ¾Ð¹ÑÑÐ².
Multiobjective variational quantum optimization for constrained problems: an application to Cash Management
Creators: name: Díez-Valle, Pablo
name: Luis-Hita, Jorge
name: Hernández-Santana, Senaida
name: Martínez-García, Fernando
name: Díaz-Fernández, Álvaro
name: Andrés, Eva
name: García-Ripoll, Juan José
name: Sánchez-Martínez, Escolástico
name: Porras, Diego
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Combinatorial optimization problems are ubiquitous in industry. In addition to finding a solution with minimum cost, problems of high relevance involve a number of constraints that the solution must satisfy. Variational quantum algorithms have emerged as promising candidates for solving these problems in the noisy intermediate-scale quantum stage. However, the constraints are often complex enough to make their efficient mapping to quantum hardware difficult or even infeasible. An alternative standard approach is to transform the optimization problem to include these constraints as penalty terms, but this method involves additional hyperparameters and does not ensure that the constraints are satisfied due to the existence of local minima. In this paper, we introduce a new method for solving combinatorial optimization problems with challenging constraints using variational quantum algorithms. We propose the Multi-Objective Variational Constrained Optimizer (MOVCO) to classically update the variational parameters by a multiobjective optimization performed by a genetic algorithm. This optimization allows the algorithm to progressively sample only states within the in-constraints space, while optimizing the energy of these states. We test our proposal on a real-world problem with great relevance in finance: the Cash Management problem. We introduce a novel mathematical formulation for this problem, and compare the performance of MOVCO versus a penalty based optimization. Our empirical results show a significant improvement in terms of the cost of the achieved solutions, but especially in the avoidance of local minima that do not satisfy any of the mandatory constraints.
description: 19 pages, 9 figures + appendix (4 pages, 2 figures)
Curves in quantum state space, geometric phases, and the brachistophase
Creators: name: Chryssomalakos, C.
name: Flores-Delgado, A. G.
name: Guzmán-González, E.
name: Hanotel, L.
name: Serrano-Ensástiga, E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Given a curve in quantum spin state space, we inquire what is the relation between its geometry and the geometric phase accumulated along it. Motivated by Mukunda and Simon's result that geodesics (in the standard Fubini-Study metric) do not accumulate geometric phase, we find a general expression for the derivatives (of various orders) of the geometric phase in terms of the covariant derivatives of the curve. As an application of our results, we put forward the brachistophase problem: given a quantum state, find the (appropriately normalized) hamiltonian that maximizes the accumulated geometric phase after time $τ$ - we find an analytical solution for all spin values, valid for small $τ$. For example, the optimal evolution of a spin coherent state consists of a single Majorana star separating from the rest and tracing out a circle on the Majorana sphere.
description: 23 pages, 6 figures
Supplementary Figures and Tables from Social behavior mediates the microbiome response to antibiotic treatment in a wild mammal
Creators: name: Brown, Bianca R. P.
name: Williams, Allison  E
name: Knight, Rob
name: Sabey, Kate
name: Onserio, Aaron
name: Ewoi, John
name: Song, Se Jin
name: Ezenwa, Vanessa
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310901
subject: Animal behaviour

description: biancabrown_tables_figures_ESM.pdf
title: Ð¢ÑÑÐ±Ð¾Ð²Ð°Ð»ÑÐ½ÑÐ¹ Ð°Ð²Ð¸Ð°ÑÐ¸Ð¾Ð½Ð½ÑÐ¹ Ð³Ð°Ð·Ð¾ÑÑÑÐ±Ð¸Ð½Ð½ÑÐ¹ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 1120 ÐºÐ²Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
Creators: name: Ð¤Ð°ÑÐºÑÐ»Ð¸Ð½, ÐÐ½ÑÐ¾Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: Ð³Ð°Ð·Ð¾ÑÑÑÐ±Ð¸Ð½Ð½ÑÐ¹ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ
ÑÑÑÐ±Ð¾Ð²Ð°Ð»ÑÐ½ÑÐ¹ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ
ÐÐ-2500
Ð¢Ð3-117
Ð²ÐµÑÑÐ¾Ð»ÐµÑÐ½ÑÐ¹ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð±ÑÐ»Ð¾ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÑÐ±Ð¾Ð²Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð°Ð²Ð¸Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð³Ð°Ð·Ð¾ÑÑÑÐ±Ð¸Ð½Ð½Ð¾Ð³Ð¾ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ (ÐÐ¢Ð) Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 1120 ÐºÐÑ, Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð²ÐµÑÑÐ¾Ð»ÐµÑÐ½Ð¾Ð³Ð¾ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ñ ÐÐ-2500 ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÐÐ Â«ÐÐ»Ð¸Ð¼Ð¾Ð²Â».
Ð¢Ð°Ðº ÐºÐ°Ðº Ð½Ð° Ð´Ð°Ð½Ð½ÑÐ¹ Ð¼Ð¾Ð¼ÐµÐ½Ñ Ð² Ð Ð¾ÑÑÐ¸Ð¸ Ð½Ðµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ð³Ð¾ÑÐ¾Ð²ÑÐµ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»Ð¸ ÑÑÐ¾Ð³Ð¾ ÐºÐ»Ð°ÑÑÐ° Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸, Ð½Ð¾ ÑÑÑÐµÑÑÐ²ÑÑÑ Ð²ÐµÑÑÐ¾Ð»ÐµÑÑ Ð¸ ÑÐ°Ð¼Ð¾Ð»ÐµÑÑ, Ð½ÑÐ¶Ð´Ð°ÑÑÐ¸ÐµÑÑ Ð² Ð´Ð°Ð½Ð½ÑÑ Ð´Ð²Ð¸Ð³Ð°ÑÐµÐ»ÑÑ ÑÐ°ÐºÐ¾Ð³Ð¾ ÐºÐ»Ð°ÑÑÐ° Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸, ÑÐµÐ¼Ñ Ð¼Ð¾Ð¶Ð½Ð¾ ÑÑÐ¸ÑÐ°ÑÑ Ð°ÐºÑÑÐ°Ð»ÑÐ½Ð¾Ð¹. ÐÐ¸Ð¿Ð»Ð¾Ð¼Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð²ÐºÐ»ÑÑÐ°ÐµÑÑÑ Ð² ÑÐµÐ±Ñ Ð²Ð²ÐµÐ´ÐµÐ½Ð¸Ðµ, ÑÑÐ¸ Ð³Ð»Ð°Ð²Ñ Ð¸ Ð·Ð°ÐºÐ»ÑÑÐµÐ½Ð¸Ðµ. ÐÑÐ¾Ð¼Ðµ ÑÐ¾Ð³Ð¾, Ð² ÑÐ°Ð±Ð¾ÑÑ Ð²ÑÐ¾Ð´Ð¸Ñ ÑÐ¿ÐµÑÐ¸Ð°Ð»ÑÐ½Ð°Ñ ÑÐ°ÑÑÑ, Ð¿Ð¾ÑÐ²ÑÑÑÐ½Ð½Ð°Ñ Ð»Ð¸ÑÐµÑÐ°ÑÑÑÐ½Ð¾Ð¼Ñ Ð¾Ð±Ð·Ð¾ÑÑ Ð¿Ð¾ ÑÐµÐ¼Ðµ Ð°Ð´Ð´Ð¸ÑÐ¸Ð²Ð½ÑÑ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¹ Ð¿ÑÐ¸Ð¼ÐµÐ½Ð¸Ð¼ÑÑ Ð´Ð»Ñ ÑÑÑÐ±Ð¸Ð½Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ñ.
Thermalization dynamics close to a quantum phase transition
Creators: name: Patanè, Dario
name: Silva, Alessandro
name: Sols, Fernando
name: Amico, Luigi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the dissipative dynamics of a quantum critical system in contact with a thermal bath. In analogy with the standard protocol employed to analyze aging, we study the response of a system to a sudden change of the bath temperature. The specific example of the XY model in a transverse magnetic field whose spins are locally coupled to a set of bosonic baths is considered. The peculiar nature of the dynamics is encoded in the correlations developing out of equilibrium. By means of a kinetic equation we analyze the spin-spin correlations and block correlations. We identify some universal features in the out-of-equilibrium dynamics. Two distinct regimes, characterized by different time and length scales, emerge. During the initial transient the dynamics is characterized by the same critical exponents as those of the equilibrium quantum phase transition and resembles the dynamics of thermal phase transitions. At long times equilibrium is reached through the propagation along the chain of a thermal front in a manner similar to the classical Glauber dynamics.
description: 4 pages, 4 figures; to be published in Phys. Rev. Lett
title: ÐÐ·Ð°Ð¸Ð¼Ð¾ÑÐ²ÑÐ·Ð°Ð½Ð½Ð°Ñ ÑÐ¸ÑÑÐµÐ¼Ð° ÑÐµÐ³ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸
title: Ð´Ð¸Ð¿Ð»Ð¾Ð¼Ð½ÑÐ¹ Ð¿ÑÐ¾ÐµÐºÑ
titleType: Subtitle
Creators: name: ÐÐ°ÑÑÐº, ÐÐ½Ð´ÑÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2016
Subjects: ÑÐµÐ³ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸
Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¸Ðµ Ñ Ð°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸
Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ

description: Ð Ð°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÐµÑÑÑ Ð²Ð·Ð°Ð¸Ð¼Ð¾ÑÐ²ÑÐ·Ð°Ð½Ð½Ð°Ñ ÑÐ¸ÑÑÐµÐ¼Ð° ÑÐµÐ³ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸ Ñ Ð¾Ð±ÑÐ°ÑÐ½ÑÐ¼Ð¸ Ð¿Ð¾Ð»Ð¾Ð¶Ð¸ÑÐµÐ»ÑÐ½ÑÐ¼Ð¸ ÑÐ²ÑÐ·ÑÐ¼Ð¸ Ð¿Ð¾ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸ Ð¸ÑÐ¿Ð¾Ð»Ð½Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ°. ÐÐ½Ð°Ð»Ð¸Ð· Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº Ð¿ÑÐ¸Ð²Ð¾Ð´Ð° Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ð¹ Ñ ÑÐ¾ÑÐºÐ¸ Ð·ÑÐµÐ½Ð¸Ñ ÐºÐ°ÑÐµÑÑÐ²Ð° ÑÐ¾ÐºÐ°ÑÐ½ÑÑ Ð¿ÑÐ¾ÑÐµÑÑÐ¾Ð². ÐÑÐ¸Ð²Ð¾Ð´Ð¸ÑÑÑ ÑÐ¸Ð½ÑÐµÐ· Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½Ð¾Ð¹ ÑÑÑÑÐºÑÑÑÐ¾Ð¹ Ð»Ð¾ÐºÐ°Ð»ÑÐ½ÑÑ Ð¿ÑÐ¸Ð²Ð¾Ð´Ð¾Ð². ÐÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ, Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð½ÑÐµ Ð² Ð¿ÑÐ¸ÐºÐ»Ð°Ð´Ð½Ð¾Ð¼ Ð¿Ð°ÐºÐµÑÐµ Matlab.
title: Debugging Type Errors with a Blackbox Compiler
Creators: name: Sharrad, Joanna
Publisher: name: University of Kent
Year: 2022

description: Type error debugging can be a laborious yet necessary process for programmers of statically typed functional programming languages. Often a compiler compounds this by inaccurately reporting the location of a type error, a problem that has been a subject of research for over thirty years. However, despite its long history, the solutions proposed are often reliant on direct modifications to the compiler, often distributed in the form of patches. These patches append another level of arduous activity to the task of debugging, keeping them modernised to the ever-changing programming language they support. This thesis investigates an additional option; the blackbox compiler. Split into three central parts, it shows the individual solutions involved in using a blackbox compiler to debug type errors in functional programming languages. First is a demonstration of how the combination of a blackbox compiler and a generic debugging algorithm can successfully locate type errors. Next tackled is a side-effect of this new combination, the introduction of extra errors, combated with a new speed boosted algorithm, evaluated with a proposed framework based on Data Science techniques to quantify the quality of a type error debugger. Lastly, the algorithms employed throughout this thesis, along with the blackbox compiler, have agnostic properties, they do not need language-specific knowledge. Thus, the final part presents utilising the agnostic abilities for an agnostic debugger to locate type errors.
Hamiltonian variational ansatz without barren plateaus
Creators: name: Park, Chae-Yeun
name: Killoran, Nathan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Variational quantum algorithms, which combine highly expressive parameterized quantum circuits (PQCs) and optimization techniques in machine learning, are one of the most promising applications of a near-term quantum computer. Despite their huge potential, the utility of variational quantum algorithms beyond tens of qubits is still questioned. One of the central problems is the trainability of PQCs. The cost function landscape of a randomly initialized PQC is often too flat, asking for an exponential amount of quantum resources to find a solution. This problem, dubbed barren plateaus, has gained lots of attention recently, but a general solution is still not available. In this paper, we solve this problem for the Hamiltonian variational ansatz (HVA), which is widely studied for solving quantum many-body problems. After showing that a circuit described by a time-evolution operator generated by a local Hamiltonian does not have exponentially small gradients, we derive parameter conditions for which the HVA is well approximated by such an operator. Based on this result, we propose an initialization scheme for the variational quantum algorithms and a parameter-constrained ansatz free from barren plateaus.
description: 13+12 pages, 7 figures; Accepted for publication in Quantum
Thermal effects on the spin domain phases of high spin-f Bose-Einstein condensates with rotational symmetries
Creators: name: Serrano-Ensástiga, E.
name: Mireles, F.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Spinor Bose Einstein condensates (BEC) can be realized nowadays using different atomic species of several spin values, offering unprecedented opportunities to scrutinize the underlying physics of its spin phase domains and of its quantum phase transitions. At sufficient low temperatures, lower than the critical temperature, a fraction of thermally excited atoms of the condensate can still interact with the whole system leading to spin-dependent interactions that can modify the nature of its phase domains. In this work, we characterize the thermal fraction of atoms of a spinorial BEC of general spin-$f$ value, provided that its ground state lies in a given spin phase with rotational symmetry. To that end, we use the Hartree-Fock approximation and a method based on the Majorana stellar representation for mixed quantum states and symmetry arguments. We consider the spin phases with usual point group symmetries, including those with some exotic phases associated to the platonic solids. The method leads to useful analytical expressions of the eigenspectrum of the thermal cloud allowing us to study the admissible regions and multipolar magnetic moments of the spin phases as a function of the temperature for general spin values.
Polarized opinion states in static networks driven by limited information horizons
Creators: name: Pérez-Martínez, Hugo
name: Mingueza, F. Bauzá
name: Soriano-Paños, David
name: Gómez-Gardeñes, Jesús
name: Floría, Luis Mario
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The widespread emergence of opinion polarization is often attributed to the rise of social media and the internet, which can promote selective exposure and the formation of echo chambers. However, experimental evidence shows that exposure to opposing views through cross-cutting ties is common in both online and offline social contexts, which frequently involve long-standing personal relationships. To account for these facts, we have developed an opinion model that applies to static contact structures, in which an agent's influence over their neighbors depends on their similarity in opinion. Our findings suggest that polarization can emerge in such static structures and, driven by an increased narrow-mindedness, even in presence of non-negligible cross-cutting ties. The polarized opinion distributions generated by our model closely resemble those obtained in surveys about highly polarized issues, allowing us to categorize various issues based on their controversial nature.
description: 15 pages including 8 figures
Acquire information about neutrino parameters by detecting supernova neutrinos
Creators: name: Huang, Ming-Yang
name: Guo, Xin-Heng
name: Young, Bing-Lin
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the supernova shock effects, the Mikheyev-Smirnov-Wolfenstein (MSW) effects, the collective effects, and the Earth matter effects in the detection of type II supernova neutrinos on the Earth. It is found that the event number of supernova neutrinos depends on the neutrino mass hierarchy, the neutrino mixing angle $θ_{13}$, and neutrino masses. Therefore, we propose possible methods to identify the mass hierarchy and acquire information about $θ_{13}$ and neutrino masses by detecting supernova neutrinos. We apply these methods to some current neutrino experiments.
description: 21 pages, 11 figures
Angle-Constrained Formation Control under Directed Non-Triangulated Sensing Graphs (Extended Version)
Creators: name: Li, Kun
name: Shen, Zhixi
name: Jing, Gangshan
name: Song, Yongduan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Angle-constrained formation control has attracted much attention from control community due to the advantage that inter-edge angles are invariant under uniform translations, rotations, and scalings of the whole formation. However, almost all the existing angle-constrained formation control methods are limited to undirected triangulated sensing graphs. In this paper, we propose an angle-constrained formation control approach under a Leader-First Follower sensing architecture, where the sensing graph is directed and non-triangulated. Both shape stabilization and maneuver control are achieved under arbitrary initial configurations of the formation. During the formation process, the control input of each agent is based on relative positions from its neighbors measured in the local reference frame and wireless communications among agents are not required. We show that the proposed distributed formation controller ensures global exponential stability of the desired formation for an nagent system. Furthermore, it is interesting to see that the convergence rate of the whole formation is solely determined by partial specific angles within the target formation. The effectiveness of the proposed control algorithms is illustrated by carrying out experiments both in simulation environments and on real robotic platforms.
description: This paper is the extended version of our paper published in Automatica