Search results for "Symbol"
showing 10 items of 7541 documents
Experimental Engineering of Arbitrary Qudit States with Discrete-Time Quantum Walks
2019
The capability to generate and manipulate quantum states in high-dimensional Hilbert spaces is a crucial step for the development of quantum technologies, from quantum communication to quantum computation. One-dimensional quantum walk dynamics represents a valid tool in the task of engineering arbitrary quantum states. Here we affirm such potential in a linear-optics platform that realizes discrete-time quantum walks in the orbital angular momentum degree of freedom of photons. Different classes of relevant qudit states in a six-dimensional space are prepared and measured, confirming the feasibility of the protocol. Our results represent a further investigation of quantum walk dynamics in p…
Radial symmetry of p-harmonic minimizers
2017
"It is still not known if the radial cavitating minimizers obtained by Ball [J.M. Ball, Discontinuous equilibrium solutions and cavitation in nonlinear elasticity, Phil. Trans. R. Soc. Lond. A 306 (1982) 557--611] (and subsequently by many others) are global minimizers of any physically reasonable nonlinearly elastic energy". The quotation is from [J. Sivaloganathan and S. J. Spector, Necessary conditions for a minimum at a radial cavitating singularity in nonlinear elasticity, Ann. Inst. H. Poincare Anal. Non Lineaire 25 (2008), no. 1, 201--213] and seems to be still accurate. The model case of the $p$-harmonic energy is considered here. We prove that the planar radial minimizers are indee…
Strongly Coupled Coherent Phonons in Single-Layer MoS 2
2019
We present a transient absorption setup combining broadband detection over the visible-UV range with high temporal resolution ($\sim$20fs) which is ideally suited to trigger and detect vibrational coherences in different classes of materials. We generate and detect coherent phonons (CPs) in single layer (1L) MoS$_2$, as a representative semiconducting 1L-transition metal dichalcogenide (TMD), where the confined dynamical interaction between excitons and phonons is unexplored. The coherent oscillatory motion of the out-of-plane $A'_{1}$ phonons, triggered by the ultrashort laser pulses, dynamically modulates the excitonic resonances on a timescale of few tens fs. We observe an enhancement by…
The global ranking game : narrowing academic excellence through numerical objectification
2018
The objective of this article is to study some of the intended and unintended effects on academe of the evolving global ranking game. I will start with some broader points on the global ranking game, the formal terms and economic interests it promotes, then continue with a presentation of the Shanghai ranking and its main rival the Times Higher Education. Through reversed engineering, I will bring out the main problems of the Shanghai ranking. I will finish with some of the key features of the demand side, the uses and effects of the tool: the psychosocial mechanisms that reproduce ranking and the lock-ins it creates. peerReviewed
Crystal field and magnetism with Wannier functions: Rare-earth doped aluminum garnets
2015
Using the recently developed method we calculate the crystal field parameters in yttrium and lutetium aluminum garnets doped with seven trivalent Kramers rare-earth ions. We then insert calculated parameters into the atomic-like Hamiltonian taking into account the electron-electron, spin-orbit and Zeeman interactions and determine the multiplet splitting by the crystal field as well as magnetic $\hat{g}$ tensors. We compare calculated results with available experimental data.
« A Different Symons »
2015
The critical reception of critic, journalist and short-novelist A. Symons raises the question of increased specialisation incapable to acknowledge the diversity of his interests. Seen as a transitional writer between Aestheticism and early Modernism, credited with introducing French Symbolism in Britain, he is usually considered as a writer whose nervous breakdown in 1908 put an end to a promising maturity. This paper suggests that we shift the focus and the corresponding vision of Symons by assessing his reception in French-speaking countries, including his academic reception, from 1890 to 2015. Recognized by the French and the Belgians as a British poet quite early in the 1900s Symons’s f…
The SO2F2 quasi-spherical top: Correspondence between tensorial and Watson's formalisms
2006
Abstract The SO2F2 quasi-spherical top molecule with C2v symmetry is considered as a distorted spherical top deriving from the SO 4 2 − tetrahedral ion. We present here a detailed correspondence between the tensorial formalism using the Td⊃C2v reorientation and the usual Hamiltonian of Watson. We have also performed ab initio calculations in order to determine the centrifugal distorsion constants in the vibrational ground state.
Entreprise et sacré. Regards transdisciplinaires
2012
International audience
Biało-czarny świat Ervina Goja
2011
The author takes up the language Ervin Goj’s poetry, a regional lachian poet who has written his poems between the years 1931-1977 under the pen name Óndra Łyhorsky. She analyses the meaning of two colours, namely white and black, which in the European culture symbolize the opposition light – dark, good – bad: white symbolizes innocence, truth, purity, simplicity, honesty, while black symbolizes evil, falsehood, nothingness, mourning, atonement. It is associated with everyday human experience which is reflected in the language and is connected with the following patternsprototypes: white – day (bílý den), black – night (černá noc), for example: bílá holubice, bílé světlo, bílá vrána, černé …
In groppa all’asino, diretti verso l’ignoto
2018
L'articolo affronta il tema del rapporto uomo natura attraverso la relazione con gli animali e si sofferma sul significato simbolico dell'asino, approfondendo e motivando le valenze terapeutiche della relazione uomo-asino e confrontandola, sempre in chiave simbolica, con la relazione analista paziente. The article deals with the theme of the relationship between human beings and natural world through the relationship with animals , and focuses on the symbolic meaning of the donkey, deepening and motivating the therapeutic value of human beings-donkey relationship and comparing it, always in a symbolic key, with the relationship between analyst and patient