cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dark Inscriptions
Creators: name: Dunn, Nick
name: Dubowitz, Dan
Publisher: name: Writingplace
Year: 2018

description: This paper presents a frame for rethinking how we make cities by exploring the notion of writing beyond a literary act.To contextualize our approach and its application, we draw upon our recent Collaborative Urbanismpractice in the Scottish city of Glasgow, UK, to explore the ongoing dialogue between practice and theory in relation to city making. A significant challenge that this emerging practice seeks to address is the need for an effective and authentic method for communities and professionals to come together to co-create new public realm. To understand the perspective our practice is based on, we define two key terms. We employ the term authorshipin its broader definition to describe the state of creating or causing effect, specifically the sense of ownership and activation resulting from engaging directly with urban space. By the term inscriptive practice, we are referring to the action of a spatial practice that leads to authorship, i.e. we use collective walking as a means of inscribing urban space. We argue that collective walking when framed as an inscriptive practice enables a different type of authorship throughrather than ofthe site. Our action research area addresses the aftermath of the Modernist project to drive a motorway through the heart of Glasgow in the 1960s and therefore seeks to give people a sense of ownership of parts of the city that have become lost to public use. In this case study we use the practice of night walking to explain how walking enables us to unlock the latent identities, memories and rituals of sites for architectural design and urban choreography. Furthermore, our paper explores, when urban stories are revealed, how they can be used to change what places become in two ways. Firstly, through the act of walking as active and inscriptive in itself. Secondly, having inscribed it and enacted it these places are opened up to a dialogue that can be built upon for future uses. To conclude, we discuss our findings so far and their implications to better understand how we can work with the people of a city to read its secrets and collectively author its future.In this manner, we intend to contribute to the understanding of how collaborative, action-based research may portray and reconstruct places and provide nuanced knowledge of sites by activating them temporally prior to permanent design interventions.
description: Writingplace, No. 2 (2018): Inscriptions: Tracing Place. History and Memory in Architectural en Literary Practice
The JADE Experiment at the PETRA $e^+e^-$ collider -- history, achievements and revival
Creators: name: Bethke, S.
name: Wagner, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The JADE experiment was one of five large detector systems taking data at the electron-positron collider PETRA, from 1979 to 1986, at $e^+e^-$ annihilation centre-of-mass energies from 12 to 46.7 GeV. The forming of the JADE collaboration, the construction of the apparatus, the most prominent physics highlights, and the post-mortem resurrection and preservation of JADE's data and software are reviewed.
description: 57 pages, 26 figures
How to test for partially predictable chaos
Creators: name: Wernecke, Hendrik
name: Sándor, Bulcsú
name: Gros, Claudius
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: For a chaotic system pairs of initially close-by trajectories become eventually fully uncorrelated on the attracting set. This process of decorrelation may split into an initial exponential decrease, characterized by the maximal Lyapunov exponent, and a subsequent diffusive process on the chaotic attractor causing the final loss of predictability. The time scales of both processes can be either of the same or of very different orders of magnitude. In the latter case the two trajectories linger within a finite but small distance (with respect to the overall extent of the attractor) for exceedingly long times and therefore remain partially predictable. Tests for distinguishing chaos from laminar flow widely use the time evolution of inter-orbital correlations as an indicator. Standard tests however yield mostly ambiguous results when it comes to distinguish partially predictable chaos and laminar flow, which are characterized respectively by attractors of fractally broadened braids and limit cycles. For a resolution we introduce a novel 0-1 indicator for chaos based on the cross-distance scaling of pairs of initially close trajectories, showing that this test robustly discriminates chaos, including partially predictable chaos, from laminar flow. One can use furthermore the finite time cross-correlation of pairs of initially close trajectories to distinguish, for a complete classification, also between strong and partially predictable chaos. We are thus able to identify laminar flow as well as strong and partially predictable chaos in a 0-1 manner solely from the properties of pairs of trajectories.
description: 14 pages, 9 figures
Law of Large Numbers for Roots of Finite Free Multiplicative Convolution of Polynomials
Creators: name: Fujie, Katsunori
name: Ueda, Yuki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 46L54, 26C05, 60F05

description: We provide the law of large numbers for roots of finite free multiplicative convolution of polynomials which have only non-negative real roots. Moreover, we study the empirical root distributions of limit polynomials obtained through the law of large numbers of finite free multiplicative convolution when their degree tends to infinity.
LHC constraints and prospects for $S_1$ scalar leptoquark explaining the $\bar B \to D^{(*)} τ\barν$ anomaly
Creators: name: Dumont, Béranger
name: Nishiwaki, Kenji
name: Watanabe, Ryoutaro
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently, deviations in flavor observables of B -> D(*) tau nu have been shown between the predictions in the Standard Model and the experimental results reported by BaBar, Belle, and LHCb collaborations. One of the solutions to this anomaly is obtained in a class of leptoquark model with a scalar leptoquark boson S_1, which is a SU(3)_c triplet and SU(2)_L singlet particle with -1/3 hypercharge interacting with a quark-lepton pair. With well-adjusted couplings, this model can explain the anomaly and be compatible with all flavor constraints. In such a case, the S_1 boson can be pair-produced at CERN's Large Hadron Collider (LHC) and subsequently decay as S_1 -> t tau, b nu, c tau. This paper explores the current 8 and 13 TeV constraints, as well as the detailed prospects at 14 TeV, of this flavor-motivated S_1 model. From the current available 8 and 13 TeV LHC searches, we obtain constraints on the S_1 boson mass for M_{S_1} < 400 GeV - 640 GeV depending on values of the leptoquark couplings to fermions. Then we study future prospects for this scenario at the 14 TeV LHC using detailed cut analyses and evaluate exclusion/discovery potentials for the flavor-motivated S_1 leptoquark model from searches for the (b nu) (b nu) and (c tau) (c tau) final states. In the latter case, we consider several scenarios for the identification of charm jets. As a result, we find that the S_1 leptoquark origin of the B -> D(*) tau nu anomaly can be probed with mass less than around 600/800 GeV at the 14 TeV LHC with 300/3000 fb^-1 of accumulated data.
description: 40 pages, 11 figures, 6 tables. Version 2: accepted by PRD
Luminescent Solar Noise Barrier – Large Scale Testing and Modeling
Creators: name: Slooff, L.H.
name: Verkuilen, S.
name: De Jong, M.M.
name: Van Den Donker, M.N.
name: Kanellis, M.
name: Debije, M.G.
Publisher: name: WIP
Year: 2016
Subjects: Concentrator and Space Applications
III-V-based Devices for Terrestrial and Space Applications

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1375-1378
description: Two modular noise barrier test setups containing photovoltaic modules have been installed in the
Netherlands, one in a North/South orientation, and the other in East/West orientation. Both setups contain one set of
mono-facial c-Si panels, one set of bi-facial c-Si panels and two luminescent solar concentrator (LSC) panels, one red
and one orange/yellow. The performance of all panels is monitored along with the irradiation and temperature data.
Here we will focus on the performance of the two LSC panels and present the results of a ray-tracing model that
mimics the situation at the demo site.
Polychromatic Arm Exponents for the Critical Planar FK-Ising model
Creators: name: Wu, Hao
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Schramm Loewner Evolution (SLE) is a one-parameter family of random planar curves introduced by Oded Schramm in 1999 as the candidates for the scaling limits of the interfaces in the planar critical lattice models. This is the only possible process with conformal invariance and a certain "domain Markov property". In 2010, Chelkak and Smirnov proved the conformal invariance of the scaling limits of the critial planar FK-Ising model which gave the convergence of the interface to SLE$_{16/3}$. We derive the arm exponents of SLE$_κ$ for $κ\in (4,8)$. Combining with the convergence of the interface, we derive the arm exponents of the critical FK-Ising model. We obtain six different patterns of boundary arm exponents and three different patterns of interior arm exponents of the critical planar FK-Ising model on the square lattice.
description: 23 pages, 3 figures
Wherever You Go, You Will Be a City
Creators: name: Pint, Kris
name: Gil Ulldemolins, Maria
Publisher: name: Writingplace
Year: 2018

description: Poet Lisa Robertson’s spatial wanderings offer an account of embodied memory that is both tactical and tactile, sensuous. Taking her book-length poem Cinema of the Present(2014), we will analyse specific literary techniques that express ‘minor memories’ (minute flashes of sensorial impressions). We will also study how her lyrical approach to the urban environment contains subtle tactics of resistance. We will argue that her literary experiments can be translated into an analysis of architectural and urban space that enhances an empathetic sense of embodied community, highlighting how focusing on the sensorial affects of city living can connect us with the ‘others’ that surround us. This very tangible presence of the ‘others’ ties in with Michel de Certeau’s work. He claimed that the technocratic strategies of urban planning destroy local practices and the stories of specific spaces. Nonetheless, it is expressly these practices and stories that revive the memory of past events, of what is absent in the present – and soon prove necessary to create habitable places. Recent heritage strategies and the use of historical narratives of remembrance still run the risk of becoming a ‘strategy’: traces of the past instrumentalized in a nationalistic discourse, or the history of a neighbourhood used in a process of gentrification . . . Thereby the active engagement implied in the revolutionary part of memory gets lost. Nonetheless, some memory traces defy this recuperation and emerge as a tactic to transform space. These are precisely what we will be looking for in Robertson’s poetry. Focusing on Robertson’s polyphonic voice, we will reveal, as Certeau already acknowledged, the important role of literature in recording and even creating subtle spatial transformations: literary descriptions that allow a ‘tactical’, rather than a ‘strategic’ (that is to say, individually resistant, rather than systematic) way to appropriate urban spaces, a way to resist the controlling, normalizing strategies.
description: Writingplace, No. 2 (2018): Inscriptions: Tracing Place. History and Memory in Architectural en Literary Practice
On the possibility of many-body localization in a doped Mott insulator
Creators: name: He, Rong-Qiang
name: Weng, Zheng-Yu
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Many-body localization (MBL) is currently a hot issue of interacting systems, in which quantum mechanics overcomes thermalization of statistical mechanics. Like Anderson localization of non-interacting electrons, disorders are usually crucial in engineering the quantum interference in MBL. For translation invariant systems, however, the breakdown of eigenstate thermalization hypothesis due to a \emph{pure} many-body quantum effect is still unclear. Here we demonstrate a possible MBL phenomenon without disorder, which emerges in a lightly doped Hubbard model with very strong interaction. By means of density matrix renormalization group numerical calculation on a two-leg ladder, we show that whereas a single hole can induce a very heavy Nagaoka polaron, two or more holes will form bound pair/droplets which are all localized excitations with flat bands at low energy densities. Consequently, MBL eigenstates of finite energy density can be constructed as composed of these localized droplets spatially separated. We further identify the underlying mechanism for this MBL as due to a novel `Berry phase' of the doped Mott insulator, and show that by turning off this Berry phase either by increasing the anisotropy of the model or by hand, an eigenstate transition from the MBL to a conventional quasiparticle phase can be realized.
description: 11 pages and 9 figures; revised
Identifying glitches near gravitational-wave signals from compact binary coalescences using the Q-transform
Creators: name: Vazsonyi, Leah
name: Davis, Derek
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a computational method to identify glitches in gravitational-wave data that occur nearby gravitational-wave signals from compact binary coalescences. The Q-transform, an established tool in LIGO-Virgo-KAGRA data analysis, computes the probability of any excess in the data surrounding a signal against the assumption of a Gaussian noise background, flagging any significant glitches. Subsequently, we perform validation tests on this computational method to ensure self-consistency in colored Gaussian noise, as well as data that contains a gravitational-wave event after subtracting the signal using the best-fit template. Finally, a comparison of our glitch identification results from real events in LIGO-Virgo's third observing run against the list of events which required glitch mitigation shows that this tool will be useful in providing precise information about data quality to improve astrophysical analyses of these events.
description: 24 pages, 6 figures. CGQ accepted
Influence of Titanium Dioxide and Molybdenum Oxide Blocking Layers on Perovskite Solar Cells
Creators: name: Habashy, K.
name: Steenhoff, V.
name: Vehse, M.
name: Becker, M.
name: Schiek, M.
name: Wark, M.
name: Agert, C.
Publisher: name: WIP
Year: 2016
Subjects: Thin Film Solar Cells and Modules
Perovskite, Organic and Hybrid devices

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1310-1315
description: Presented here is a study of titanium dioxide thin films for their use as an electron transport layer (ETL) in perovskite solar
cells (PSCs). These studies were performed on both the amorphous and polycrystalline (anatase) phases of titanium
dioxide (TiO2). Amorphous films were deposited by reactive e-beam thermal evaporation of titanium in oxygen atmosphere.
To obtain the anatase phase, these films were annealed in air at 500C for 30 minutes. The effect of the oxygen
flow rate on the transmissivity of both the amorphous and anatase films was investigated. It is shown that, for amorphous
films, the transmissivity increases with increasing the oxygen flow rate, while the transmissivity is almost constant for the
anatase case. Also, the dependence of the resistivity on the oxygen flow rate for the amorphous films was investigated.
Both the amorphous and anatase films were integrated into PSCs. It is shown that, for amorphous films, the Voc increases
with increasing the oxygen flow rate, while it shows no clear trend for the anatase case. Finally, the effect of a molybdenum
oxide (MoOx) layer between the spiro-MEOTAD and gold back-contact was investigated. This addition leads to
an improvement in the cell performance, achieving an efficiency of 8.1%.
Experimental generation of circulating cavity magnon polaritons
Creators: name: Bourhill, Jeremy
name: Yu, Weichao
name: Vlaminck, Vincent
name: Bauer, Gerrit E. W.
name: Ruoso, Giueseppe
name: Castel, Vincent
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We experimentally realize circularly polarised unidirectional cavity magnon polaritons in a torus-shaped microwave cavity loaded by a small magnetic sphere. At special positions the clockwise and counterclockwise modes are circularly polarized, such that only one of them couples to the magnet, which breaks the mode degeneracy. We reveal the chiral nature of the spectral energy and angular momentum flow by observing and modelling non-reciprocities of the microwave scattering matrix.
description: 7 pages, 7 figures
‘A Cacophony of the Unheard and the Yet-to-Be’
Creators: name: Ainley, Rosa
Publisher: name: Writingplace
Year: 2018

description: The people’s palace, Alexandra Palace in north London, is alive with voices – redolent with the history of popular entertainment. In order to fully evoke its narrative, the writing must be too: the proposed piece uses imaginative and critical writing, historiography and creative non-fiction, demonstrating a method of re/producing place. It explores and exemplifies the use of writing inand asarchitecture, as a tool in possible regeneration through inscription of its existence in writing inspired by observation, plans and images, first-person accounts, interviews and archive work. Together the areas of writing cultivate and investigate a method based on the factual (or ‘factish’) for greater understanding of the building’s cultural recovery, recognizing the role of the fictional or speculative in regeneration. This adds practical value to the literary, as layers of expression and varied opinions and memories can feed into decisions about redevelopment under consideration. Speaking of the relationship between writing and architecture and their respective uses, Adrian Forty suggests that language makes buildings come alive, that it can ‘do things’ that buildings cannot, such as nuance, metaphor and storytelling (‘Writing Architecture?’, Royal Academy of Arts, 2014). Between evidence and imagination, this piece, rooted in the real and taking flight from it, brings these ideas together: the certainties of the material building and the multiple ‘truths’ of language. Katherine Shonfield describes ‘what happens when we accept that architecture does tangibly exist, not as a pristine impervious whole, but in the perception of the beholder’ (Walls Have Feelings: Architecture, Film and the City(London: Routledge, 2000), 160). Plurivocity, an ‘imaginative method’ of uncovering and recovering a building’s specifics, offers a response. Using excerpts from three ‘scenes’ – ‘People/Public’, ‘Lost/Missing’, ‘Found/Futures’ – that formed part of my PhD (‘Writing Alexandra Palace: Plurivocity as a method of cultural recovery of buildings’, Royal College of Art, 2016), an understanding forms of how the palace can be renewed, addressing and responding to what its publics need and want from it. The term ‘people’s palace’ is examined in relation to public space, and to the inherent contradictions of exclusion and openness in a palace, in public ownership since 1900. A consideration of what the building lacks is an essential condition for planning or conjecturing on any reinvigoration. An outline of what the palace could be for, how it could be programmed, reaches toward its next phase of existence with new and adapted suggestions for revitalization and reprogramming as a driver of regeneration. More than simply memorializing or adding forgotten strands of history, this piece examines how spaces were produced, how they exist now and how they can be renewed and transformed: looking at past, present and future.
description: Writingplace, No. 2 (2018): Inscriptions: Tracing Place. History and Memory in Architectural en Literary Practice
Orthogonal Polynomials from Hermitian Matrices II
Creators: name: Odake, Satoru
name: Sasaki, Ryu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This is the second part of the project `unified theory of classical orthogonal polynomials of a discrete variable derived from the eigenvalue problems of hermitian matrices.' In a previous paper, orthogonal polynomials having Jackson integral measures were not included, since such measures cannot be obtained from single infinite dimensional hermitian matrices. Here we show that Jackson integral measures for the polynomials of the big $q$-Jacobi family are the consequence of the recovery of self-adjointness of the unbounded Jacobi matrices governing the difference equations of these polynomials. The recovery of self-adjointness is achieved in an extended $\ell^2$ Hilbert space on which a direct sum of two unbounded Jacobi matrices acts as a Hamiltonian or a difference Schrödinger operator for an infinite dimensional eigenvalue problem. The polynomial appearing in the upper/lower end of Jackson integral constitutes the eigenvector of each of the two unbounded Jacobi matrix of the direct sum. We also point out that the orthogonal vectors involving the $q$-Meixner ($q$-Charlier) polynomials do not form a complete basis of the $\ell^2$ Hilbert space, based on the fact that the dual $q$-Meixner polynomials introduced in a previous paper fail to satisfy the orthogonality relation. The complete set of eigenvectors involving the $q$-Meixner polynomials is obtained by constructing the duals of the dual $q$-Meixner polynomials which require the two component Hamiltonian formulation. An alternative solution method based on the closure relation, the Heisenberg operator solution, is applied to the polynomials of the big $q$-Jacobi family and their duals and $q$-Meixner ($q$-Charlier) polynomials.
description: 65 pages. Comments, references and table of contents are added. To appear in J.Math.Phys
Constraining the $Λ$CDM and Galileon models with recent cosmological data
Creators: name: Neveu, J.
name: Ruhlmann-Kleider, V.
name: Astier, P.
name: Besançon, M.
name: Guy, J.
name: Möller, A.
name: Babichev, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Galileon theory belongs to the class of modified gravity models that can explain the late-time accelerated expansion of the Universe. In previous works, cosmological constraints on the Galileon model were derived, both in the uncoupled case and with a disformal coupling of the Galileon field to matter. There, we showed that these models agree with the most recent cosmological data. In this work, we used updated cosmological data sets to derive new constraints on Galileon models, including the case of a constant conformal Galileon coupling to matter. We also explored the tracker solution of the uncoupled Galileon model. After updating our data sets, especially with the latest \textit{Planck} data and BAO measurements, we fitted the cosmological parameters of the $Λ$CDM and Galileon models. The same analysis framework as in our previous papers was used to derive cosmological constraints, using precise measurements of cosmological distances and of the cosmic structure growth rate. We showed that all tested Galileon models are as compatible with cosmological data as the $Λ$CDM model. This means that present cosmological data are not accurate enough to distinguish clearly between both theories. Among the different Galileon models, we found that a conformal coupling is not favoured, contrary to the disformal coupling which is preferred at the $2.3σ$ level over the uncoupled case. The tracker solution of the uncoupled Galileon model is also highly disfavoured due to large tensions with supernovae and \textit{Planck}+BAO data. However, outside of the tracker solution, the general uncoupled Galileon model, as well as the general disformally coupled Galileon model, remain the most promising Galileon scenarios to confront with future cosmological data. Finally, we also discuss constraints coming from Lunar Laser Ranging experiment and gravitational wave speed of propagation.
description: 22 pages, 17 figures, published version in A&A
Early Modern Narratives of Diu’s Architecture and Space
Creators: name: Grancho, Nuno
Publisher: name: Writingplace
Year: 2018

description: It is difficult to envision the scope of how early European visitors of places in other parts of the world struggled to describe what they saw after their arrival. At that time, the classificatory arrangements for recounting peoples and cultures were provided by Aristotle or Herodotus. The practice of labelling and illustrating a place with words and images was made along the lines of what could be expected and known from a comparable place at ‘home’, adapting pieces to match the evident reality. This article explores the sixteenth-century spatial descriptions of Diu authored by João de Castro, Gaspar Correa and João de Barros. It seeks to analyse how these observers identified and construed knowledge about difference in the architectural and urban space of Diu and how this related to wider historical-geographical discourses of the time, when there was no clear framework of territories within which cultural artefacts could meaningfully be organized. By approaching the question of histories and stories of Diu – a place profoundly grounded in Portuguese colonial imagery – through the evocations of visual and literary memory and the understanding of the built environment, the article reveals that a crucial field of inquiry about identity and memory in colonial locations in India has gone largely unnoticed by those who construct a sense of the passage of time. Ultimately, the article claims tangible constructions as legible documents of notional constructions and discusses construction processes, materials and critical receptions as evidence of the physical’s reciprocal relationship to the conceptual construction of the East in European culture.
description: Writingplace, No. 2 (2018): Inscriptions: Tracing Place. History and Memory in Architectural en Literary Practice
III-V Multi-Junction Metal-Wrap-through (MWT) Concentrator Solar Cells
Creators: name: Oliva, E.
name: Salvetat, T.
name: Jany, C.
name: Thibon, R.
name: Helmers, H.
name: Steiner, M.
name: Schachtner, M.
name: Beutel, P.
name: Klinger, V.
name: Moulet, J.S.
name: Dimroth, F.
Publisher: name: WIP
Year: 2016
Subjects: Concentrator and Space Applications
III-V-based Devices for Terrestrial and Space Applications

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1367-1371
description: III-V multi-junction solar cells are promising devices for photovoltaic applications under very high
concentration levels of sunlight. Shadowing losses of the front side metallization and ohmic resistance losses in the metal
grid limit the practical cell size typically to around 1 cm2 at 800 suns. The use of a full back-contact architecture, similar to
the Metal Wrap-Trough (MWT) technology known in silicon photovoltaics, can help to overcome this limitation.
Furthermore, positioning both the positive and negative contact pads on the rear side of concentrator solar cells opens the
possibility for efficient packaging solutions and the realization of dense array receivers with low metal shadowing. The MWT
technology addresses conventional concentrating photovoltaics as well as combined PV-thermal applications and offers
specific advantages for large area devices at high intensities. This work presents first experimental results for MWT
architectures applied to III-V tandem solar cells and discusses specific challenges. An efficiency of 28.3 % at 176 suns and
27.2% at 800 suns has been measured for the best MWT Ga0.51In0.49P/Al0.03Ga0.97As tandem solar cells.
Optimizing the Deposition of Thin Layers of Organic-Inorganic Hybrid Perovskite Methylammonium Lead Iodide (CH3NH3PbI3) on Large Surfaces through Their Optical Properties
Creators: name: Ocaña, L.
name: Quinto, C.
name: Montes, C.
name: Linares, A.
name: Llarena, E.
name: González, O.
name: Molina, D.
name: Pío, A.
name: Hernandez-Rodriguez, C.
name: González-Pérez, S.
name: Guerrero-Lemus, R.
name: Friend, M.
name: Cendagorta, M.
Publisher: name: WIP
Year: 2016
Subjects: Thin Film Solar Cells and Modules
Perovskite, Organic and Hybrid devices

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1316-1323
description: Nowadays, most of the Research and Development (R&D) efforts devoted to perovskite solar cells
have been focused on achieving higher power conversion efficiencies, by using small sized substrates with even
smaller active areas. The present paper proposes a method for optimizing the deposition of thin layers of organicinorganic
hybrid perovskite methylammonium lead iodide (CH3NH3PbI3) on large surfaces (up to 75 mm x 75 mm)
via spin coating procedures, performed in a clean room environment at room temperature and by considering their
optical properties to assess their quality. Thus, in order to map the deposited area and realize studies about their
optical properties, the absorption coefficient, the refractive index and layers thicknesses were determined by using a
high accuracy spectroscopic ellipsometer system based on rotating compensator ellipsometer (RCE) technology from
the J.A. Woolam Co. as functions of the wavelength, within a spectral range from 250 to 800 nm. Also, the samples
were studied with a fluorescence spectroscopic system, in order to evaluate their photoluminescence properties and,
in order to validate the chosen methodology; an Atomic Force Microscopy was used to verify the layers uniformity
and thicknesses.
Ultraviolet divergences in non-renormalizable supersymmetric theories
Creators: name: Smilga, A. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a pedagogical review of our current understanding of the ultraviolet structure of N = (1,1) 6D supersymmetric Yang-Mills theory and of N = 8 4D supergravity. These theories are not renormalizable, they involve power ultraviolet divergences and, in all probability, an infinite set of higher-dimensional counterterms that contribute to on-mass-shell scattering amplitudes. A specific feature of supersymmetric theories (especially, of extended supersymmetric theories) is that these counterterms may not be invariant off shell under the full set of supersymmetry transformations. The lowest-dimensional nontrivial counterterm is supersymmetric on shell. Still higher counterterms may lose even the on-shell invariance. On the other hand, the full effective Lagrangian, generating the amplitudes and representing an infinite sum of counterterms, still enjoys the complete symmetry of original theory. We also discuss simple supersymmetric quantum-mechanical models that exhibit the same behaviour.
description: 26 pages, 3 figures. Invited contribution in the conference "Supersymmetry and Quantum Symmetries" (Dubna, July 2015). Few typos corrected. To be published in Phys. Part. Nucl. Lett
Analytical Equation of Three-point Correlation Function of Galaxies: to Third Order of Density Perturbation
Creators: name: Wu, Shu-Guang
name: Zhang, Yang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Applying functional differentiation to the density field with Newtonian gravity, we obtain the static, nonlinear equation of the three-point correlation function $ζ$ of galaxies, to the third order density perturbations. We make the equation closed and perform renormalization of the mass and the Jeans wavenumber. Using the boundary condition inferred from observations, we obtain the third order solution $ζ(r, u, θ)$ at fixed $u=2$, which is positive, exhibits a $U$-shape along the angle $θ$, and decreases monotonously along the radial $r$ up to the range $r \leq 30\, h^{-1}$Mpc in our computation. The corresponding reduced $Q(r, u, θ)$ deviates from 1 of the Gaussian case, has a deeper $U$-shape along $θ$, and varies non-monotonously along $r$. The third order solution agrees with the SDSS data of galaxies, quite close to the previous second order solution, especially at large scales. This indicates that the equations of correlation functions with increasing orders of density perturbation provide a stable description of the nonlinear galaxy system.
description: 10 pages, 4 figures, to appear in RAA 2022
[Rezension von: Ritual und Poesie : Formen und Orte religiöser Dichtung im Alten Orient, im Judentum und im Christentum]
Creators: name: Weber, Beat
Publisher: name: European journal of theology
Year: 2024

description: European journal of theology, V. 13 N. 1 (2004): European Journal of Theology, Band 13, Heft 1
Dye-Sensitized/c-Si and Perovskite/c-Si Tandem Solar Cells
Creators: name: Vildanova, M.F.
name: Nikolskaia, A.B.
name: Kozlov, S.S.
name: Shevaleevskiy, O.I.
Publisher: name: WIP
Year: 2016
Subjects: Thin Film Solar Cells and Modules
Perovskite, Organic and Hybrid devices

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1280-1283
description: In this paper we present the results for development and a comparative investigation of the
photovoltaic characteristics for the two types of tandem solar cells: (1) dye-sensitized/crystalline silicon (DSC/c-Si)
tandem solar cell and (2) Perovskite/crystalline (Perovskite/c-Si) silicon tandem solar cell. We demonstrate the
advantages of the fabricated tandem solar cells for using in the outdoor conditions. It was shown that under high light
intensities both cells of the tandem structure nearly equally contribute to the performance of the tandem device. From
the other hand, under low illumination intensities and diffused illumination the main contribution comes from the top
DSC (Perovskite) solar cell. The results of long-term outdoor monitoring of the developed tandem structures revealed
the advantages of the proposed tandem systems over the conventional solar cells to generate more electricity under
real outdoor working conditions.
Processing and Optimization of the Perovskite Solar Cell Based on PEDOT:PSS/CH3NH3PbI3-XClX
Creators: name: Kadlec, M.
name: Vanek, J.
name: Strachala, D.
name: Hylsky, J.
name: Sionova, M.
name: Weiter, M.
Publisher: name: WIP
Year: 2016
Subjects: Thin Film Solar Cells and Modules
Perovskite, Organic and Hybrid devices

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1291-1292
description: Purpose of the work is the preparation of perovskite photovoltaic cells and optimization of the structure
based on PEDOT:PSS/ CH3NH3PbI3-XClX. The main idea is the study of changes in their photovoltaic properties
depending on the different composition. As a result were created an eight samples which were further analyzed to
improve the manufacturing process.
Testing cosmology with a catalogue of voids in the BOSS galaxy surveys
Creators: name: Nadathur, Seshadri
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a public catalogue of voids in the Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 11 LOWZ and CMASS galaxy surveys. This catalogue contains information on the location, sizes, densities, shapes and bounding surfaces of 8956 independent, disjoint voids, making it the largest public void catalogue to date. Voids are identified using a version of the ZOBOV algorithm, the operation of which has been calibrated through tests on mock galaxy populations in N-body simulations, as well as on a suite of 4096 mock catalogues which fully reproduce the galaxy clustering, survey masks and selection functions. Based on this, we estimate a false positive detection rate of 3%. Comparison with mock catalogues limits deviations of the void size distribution from that predicted in the $Λ$CDM model to be less than 6% for voids with effective radius $8
description: 14 pages, 11 figures. MNRAS accepted. Public void catalogue available at http://www.icg.port.ac.uk/stable/nadathur/voids/ Figures 10 and 11 show the tests of cosmology. v2: minor changes to match accepted version, conclusions and catalogue unchanged
Axiomatic Local Metric Derivatives for Low-Level Fractionality with Mittag-Leffler Eigenfunctions
Creators: name: Weberszpil, J.
name: Helayël-Neto, J. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this contribution, we build up an axiomatic local metric derivative that exhibits the Mittag-Leffler as an eigenfunction and is valid for low-level fractionality, whenever the order parameter is close to $1$. This version of deformed or metric derivative may be a possible alternative to the versions by Jumarie and the inappropriately so-called local fractional derivative also based on the Jumarie's approach. With rules similar to the classical ones, but with a solid axiomatic basis in the limit pointed out here, we present our results and some comments on the limits of validity for the controversial formalism found in the literature of the area.
description: 5 pages
Group classification of Schrödinger equations with position dependent mass
Creators: name: Nikitin, A. G.
name: Zasadko, T. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81Qxx, 81Vxx

description: Maximal kinematical invariance groups of $2d$ Schrödinger equation with a position dependent mass and arbitrary potential are classified. It is demonstrated that there exist seven classes of such equations possessing non-equivalent continuous symmetry group. Three of these classes include arbitrary functions while the remaining ones are defined up to arbitrary parameters. In particular, for the case of a constant mass the class missing in the Boyer classification (Boyer C P 1974 Helv. Phys. Acta{\bf 47}, 450) is indicated. A constructive test of (non)equivalence of a PDM system to a constant mass system is proposed.
description: signes for parameters \alpha and \gamma are corrected
Bad-Metallic Behavior of Doped Mott Insulators
Creators: name: Kokalj, Jure
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Employing Nernst-Einstein decomposition $σ=e^2χ_c D$ of the conductivity $σ$ onto charge susceptibility (compressibility) $χ_c$ and diffusion constant $D$, we argue that the bad-metallic behavior of $σ$ in the regime of high temperatures and lightly doped insulator is dominated by the strong temperature and doping dependence of $χ_c$. In particular, we show how at small dopings $χ_c$ strongly decreases towards undoped-insulating values with increasing temperature and discuss simple picture leading to the linear-in-temperature resistivity with the prefactor increasing inversely with decreasing concentration ($p$) of doped holes, $ρ\propto T/p$. On the other hand, $D$ shows weak temperature and doping dependence in the corresponding regime. We support our arguments by numerical results on the prototypical two dimensional Hubbard model and discuss the proposed picture at length from the experimental point of view.
description: 9 pages, 4 figures
Sum-avoiding sets in groups
Creators: name: Tao, Terence
name: Vu, Van
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11B30

description: Let $A$ be a finite subset of an arbitrary additive group $G$, and let $ϕ(A)$ denote the cardinality of the largest subset $B$ in $A$ that is sum-avoiding in $A$ (that is to say, $b_1+b_2 \not \in A$ for all distinct $b_1,b_2 \in B$). The question of controlling the size of $A$ in terms of $ϕ(A)$ in the case when $G$ was torsion-free was posed by Erdős and Moser. When $G$ has torsion, $A$ can be arbitrarily large for fixed $ϕ(A)$ due to the presence of subgroups. Nevertheless, we provide a qualitative answer to an analogue of the Erdős-Moser problem in this setting, by establishing a structure theorem, which roughly speaking asserts that $A$ is either efficiently covered by $ϕ(A)$ finite subgroups of $G$, or by fewer than $ϕ(A)$ finite subgroups of $G$ together with a residual set of bounded cardinality. In order to avoid a large number of nested inductive arguments, our proof uses the language of nonstandard analysis. We also answer negatively a question of Erdős regarding large subsets $A$ of finite additive groups $G$ with $ϕ(A)$ bounded, but give a positive result when $|G|$ is not divisible by small primes.
description: 27 pages, 2 figures. Formatted using the Discrete Analysis style file (this time with correct metadata)
Expanding Fireball in Magnetar Bursts and Fast Radio Bursts
Creators: name: Wada, Tomoki
name: Ioka, Kunihito
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A fireball of radiation plasma created near the surface of a neutron star (NS) expands under its own pressure along magnetic field lines, and produces photon emission and relativistic matter outflow. We comprehensively classify the expanding fireball evolution into five cases and obtain the photospheric luminosity and the kinetic energy of the outflow, taking into account key processes; lateral diffusion of photons escaping from a magnetic flux tube, effects of strong magnetic field, baryon loading from the NS surface, and radiative acceleration via cyclotron resonant scattering, some of which have not been considered in the context of gamma-ray bursts. Applying our model to magnetar bursts with fast radio bursts (FRBs), in particular the X-ray short bursts from SGR 1935+2154 associated with the Galactic FRB 20200428A, we show that the burst radiation can accelerate the outflow to high Lorentz factor with sufficient energy to power FRBs.
description: 16 pages, 6 figures
Threshold Trap Density for Valid Mott-Schottky Analysis in Carrier Selective Optoelectronic Devices
Creators: name: Nandal, V.
name: Nair, P.R.
Publisher: name: WIP
Year: 2016
Subjects: Thin Film Solar Cells and Modules
Perovskite, Organic and Hybrid devices

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1293-1295
description: Solution processed carrier selective devices for optoelectronic applications have gained a lot of recent research
interest. Performance optimization of such devices requires detailed understanding of device and material characterization
techniques. Capacitance voltage technique using Mott-Schottky (MS) analysis is one such powerful characterization scheme.
However, applicability of such analysis for carrier selective PIN devices is not well explained. Here, we report detailed
numerical simulations to understand the effect of defect states on CV characteristics. We find that MS analysis is reliable only
if trap density is more than a certain threshold trap density, which decreases with thickness of active layer. Apparent linearity
in 1/2 −  plot is often not sufficient, and hence MS analysis should use devices with different active layer thickness to obtain
a reliable estimate of trap densities.
Electrical Properties of the Al/Cu(InGa)Se2 Junctions: Paving the Way Towards Schottky Barrier CIGS Solar Cells?
Creators: name: Theys, B.
name: Klinkert, T.
name: Mollica, F.
name: Leite, E.
name: Donsanti, F.
name: Jubault, M.
name: Lincot, D.
Publisher: name: WIP
Year: 2016
Subjects: Thin Film Solar Cells and Modules
CdTe, CIS and Related Thin Film Solar Cells and Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1244-1246
description: Devices based on a metal-semiconductor contact are potential candidates for the fabrication of photovoltaic cells as long
as the corresponding junctions exhibit good rectifying properties and a low contact resistance.
This communication presents a detailed electrical analysis of the Al/Cu(InGa)Se2 junctions. The values of the representative
parameters of the quality of the diode such as the barrier height, the ideality factor and the series resistance are deduced from
intensity-voltage curves. Barrier height values are comprised between 0.64 V and 0.85 V with n values mostly around 2,
depending on the surface treatment of CIGS.
It is concluded that this system may be interesting for being used further in CIGS technologies.
Electron Beam Crystallization of Amorphous Silicon Thin Films in the Solid Phase Regime and Assisted Simulations by Finite Element Method
Creators: name: Saager, S.
Publisher: name: WIP
Year: 2016
Subjects: Thin Film Solar Cells and Modules
Silicon-based Thin Film Solar Cells and Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1256-1259
description: The impact of an electron beam (EB) treatment on a-Si coated Si-substrates was investigated by SEM
and EBSD analysis. EB processing of a-Si layers by line scanning led to the formation of a narrow grained
polycrystalline structure, which is characteristically for an explosive solid phase crystallization. By increasing the EB
energy density an undesired delamination of the Si thin film was observed. However, an epitaxial layer regrowth with
the similar crystallographic orientation of the (001) Si substrate could be reached by applying a lower EB energy density
and by a sequential raise to a tenth of the EB power in comparison to line scanning experiments. By finite element
simulations, the reason for layer delamination could be revealed by calculating the temperature and stress field during
the EB treatment of the thin film–substrate–system: Due to thermal expansion during the EB line scans the elastic strain
energy density accumulates and reaches a critical level. If the value exceeds the a-Si/c-Si interface energy, layer
delamination during the EB process is caused.