26 hasil untuk "Feng-Li Lin"
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Artikel Jurnal Teks lengkap
R&D Investment, Financial and Environmental Performance Nexuses via Bootstrap Fourier Quantiles Granger Causality Test
This study investigated the relationship between R&D investments and financial and environmental performance. The direction, size, and significance of various phases of these variables were generated using the bootstrap Fourier quantiles Granger causality test. In our results, a positive…
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Do DJIA Firms Reflect Stationary Debt Ratios?
To form optimum firm capital structure strategies to face unanticipated economic events, firm managers should understand the stability of a firm’s capital structure. The aim of this research was to study whether the debt ratio is stationary in listed firms on the Dow Jones Industrial Average…
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Entanglement harvesting and quantum discord of alpha vacua in de Sitter space
Abstract The CPT invariant vacuum states of a scalar field in de Sitter space, called α-vacua, are not unique. We explore the α-vacua from the quantum information perspective by a pair of static Unruh-DeWitt (UDW) detectors coupled to a scalar field with either monopole or dipole coupling, which…
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Next-to-eikonal corrected double graviton dressing and gravitational wave observables at O G 2 $$ \mathcal{O}\left({G}^2\right) $$
Abstract Following a recent proposal to describe inelastic eikonal scattering processes in terms of gravitationally dressed elastic eikonal amplitudes, we motivate a collinear double graviton dressing and investigate its properties. This is derived from a generalized Wilson line operator in the…
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Constraint on Hybrid Stars with Gravitational Wave Events
Motivated by the recent discoveries of compact objects from LIGO/Virgo observations, we study the possibility of identifying some of these objects as compact stars made of dark matter called dark stars, or the mix of dark and nuclear matters called hybrid stars. In particular, in GW190814, a new…
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Quantum measurement in two-dimensional conformal field theories: Application to quantum energy teleportation
We construct a set of quasi-local measurement operators in 2D CFT, and then use them to proceed the quantum energy teleportation (QET) protocol and show it is viable. These measurement operators are constructed out of the projectors constructed from shadow operators, but further acting on the…
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Longevity and Economic Growth in China and India Using a Newly Developed Bootstrap ARDL Model
In this study, we use a recently developed Bootstrap ARDL model to examine the influence of longevity (life expectancy after giving birth) and alcohol consumption on economic progression (GDP) in both China and India during the years between 1992 and 2015. Empirical results have shown an extended…
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A Unified Dark-matter-driven Relativistic Bondi Route to Black Hole Growth from Stellar to Supermassive Scales
Observations of luminous quasars at z ≳ 7 reveal supermassive black holes (SMBHs) with inferred masses M _BH ∼ 10 ^9 M _⊙ formed within the first ∼700 Myr of cosmic history. Standard growth channels—Eddington-limited gas accretion and hierarchical mergers—face severe timescale restrictions. We…
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Subsystem eigenstate thermalization hypothesis for entanglement entropy in CFT
Abstract We investigate a weak version of subsystem eigenstate thermalization hypothesis (ETH) for a two-dimensional large central charge conformal field theory by comparing the local equivalence of high energy state and thermal state of canonical ensemble. We evaluate the single-interval Rényi…
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Note on ETH of descendant states in 2D CFT
Abstract We investigate the eigenstate thermalization hypothesis (ETH) of highly excited descendant states in two-dimensional large central charge c conformal field theory. We use operator product expansion of twist operators to calculate the short interval expansions of entanglement entropy and…
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Dissimilarities of reduced density matrices and eigenstate thermalization hypothesis
Abstract We calculate various quantities that characterize the dissimilarity of reduced density matrices for a short interval of length ℓ in a two-dimensional (2D) large central charge conformal field theory (CFT). These quantities include the Rényi entropy, entanglement entropy, relative entropy…
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Revisit coal consumption, CO emissions and economic growth nexus in China and India using a newly developed bootstrap ARDL bound test
This study revisits coal consumption, CO 2 emissions and economic growth nexus for both China and India using a newly developed Bootstrap ARDL model over the period of 1969–2015. Empirical results indicate no long-run relationship among these three variables for both China and India, and Granger…
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Neural network flows of low q-state Potts and clock models
It is known that a trained restricted Boltzmann machine (RBM) on the binary Monte Carlo Ising spin configurations, generates a series of iterative reconstructed spin configurations which spontaneously flow and stabilize to the critical point of physical system. Here we construct a variety of neural…
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Rényi entropy at large energy density in 2D CFT
Abstract We investigate the Rényi entropy and entanglement entropy of an interval with an arbitrary length in the canonical ensemble, microcanonical ensemble and primary excited states at large energy density in the thermodynamic limit of a two-dimensional large central charge c conformal field…
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Black hole shadow with soft hairs
Abstract Light bending by the strong gravity around the black hole will form the so-called black hole shadow, the shape of which can shed light on the structure of the near-horizon geometry to possibly reveal novel physics of strong gravity and black hole. In this work, we adopt both analytical and…
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Double soft graviton factors from the gravitational Wilson line
Abstract The description of low-energy (“soft”) gravitons using universal theorems continues to attract attention. In this paper, we consider the emission of two soft gravitons, using a previously developed formalism that describes (next-to) soft graviton emission in terms of generalised Wilson…
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Compact star of holographic nuclear matter and GW170817
We use a holographic model of quantum chromodynamics to extract the equation of state (EoS) for the cold nuclear matter of moderate baryon density. This model is based on the Sakai-Sugimoto model in the deconfined Witten's geometry with the additional point-like D4-brane instanton configuration as…
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GW170817 and GW190425 as hybrid stars of dark and nuclear matter
Abstract We propose three scenarios for compact hybrid stars composed of nuclear and dark matter. These hybrid stars could provide alternative interpretations to the LIGO/Virgo events GW170817 and GW190425. To demonstrate our proposal, we solve the Tolman–Oppenheimer–Volkoff configurations of…
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Artikel Jurnal Teks lengkap
Image Stream From Paragraph Method Based on Scene Graph
The task of generating sequence images from paragraphs by generating confrontation networks can already generate higher quality images.However,when the input text involves multiple objects and relationships,the context information of the text sequence is difficult to extract,the object layout of…
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Decoherence patterns of topological qubits from Majorana modes
We investigate the decoherence patterns of topological qubits in contact with the environment using a novel way of deriving the open system dynamics, rather than using the Feynman–Vernon approach. Each topological qubit is made up of two Majorana modes of a 1D Kitaev chain. These two Majorana modes…