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SciPost Physics Core
Scopus
ISSN 2666-9366 · SciPost · 442 artikel di indeks
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Artikel Jurnal
Superconducting diode effect in a meso-wedge geometry with Abrikosov vortices
In this study, we explore the behavior of a superconducting meso-wedge geometry in 3+1 dimensions (three spatial dimensions plus time) subjected to external transport currents at its boundaries and surfaces, as well as external fields applied along the $\hat{z}$-direction. The transport currents…
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Artikel Jurnal
Tunneling with physics-informed RG flows in the anharmonic oscillator
We solve the anharmonic oscillator using physics-informed renormalisation group (PIRG) flows, focusing on the weak coupling regime dominated by instanton-induced tunnelling processes. We demonstrate that the instanton physics underlying the exponential suppression of the energy gap is already…
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Artikel Jurnal
Low energy effective theories of composite dark matter with real representations
We consider pseudo Nambu-Goldstone bosons arising from Dirac fermions transforming in real representations of a confining gauge group as dark matter candidates. We consider a special case of two Dirac fermions and couple the resulting dark sector to the Standard Model using a vector mediator…
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Artikel Jurnal
Multispecies totally asymmetric simple exclusion process with long-range swap
We introduce the multispecies totally asymmetric simple exclusion process (mTASEP) with long-range swap, a new interacting particle system combining the backward-push rule with the forward-jump rule. Although governed by local dynamics, the model induces effective long-range particle exchanges. We…
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Artikel Jurnal
Intrinsic non-Hermitian topological phases
We study the interplay of non-Hermitian topological phases under point- and line-gap conditions. Using natural homomorphisms from line-gap to point-gap phases, we distinguish extrinsic phases, reducible to Hermitian or anti-Hermitian line-gapped phases, from intrinsic phases, which are genuinely…
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Artikel Jurnal
Interplay of entanglement structures and stabilizer entropy in spin models
Understanding the interplay between nonstabilizerness and entanglement is crucial for uncovering the fundamental origins of quantum complexity. Recent studies have proposed entanglement spectral quantities, such as antiflatness of the entanglement spectrum and entanglement capacity, as effective…
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Artikel Jurnal
Model non-Hermitian topological operators without skin effect: A general principle of construction
We propose a general principle of constructing non-Hermitian (NH) operators for insulating and gapless topological phases in any dimension ($d$) that over an extended NH parameter regime feature real eigenvalues and zero-energy topological boundary modes, when in particular their Hermitian…
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Artikel Jurnal
Resonant current-in-plane spin-torque diode effect in magnet–normal metal bilayers
Via the spin-Hall effect and its inverse, in-plane charge currents in a ferromagnet–normal metal (F$|$N) bilayer can be used to excite and detect magnetization dynamics in F. Using a magneto-electric circuit approach, we here consider the current response to quadratic order in the applied electric…
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Artikel Jurnal
System-environmental entanglement in critical spin systems under $ZZ$-decoherence and its relation to strong and weak symmetries
Open quantum many-body systems exhibit nontrivial behavior under decoherence. In particular, system-environmental entanglement (SEE) is one of the efficient quantities for classifying mixed states subject to decoherence. In this work, we investigate the SEE of critical spin chains under…
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Artikel Jurnal
Diffusive hydrodynamics of hard rods from microscopics
We derive exact equations governing the large-scale dynamics of hard rods, including effects on the diffusive scale that go beyond ballistic transport. Diffusive scale corrections are the first-order terms in the hydrodynamic gradient expansion and we obtain them through an explicit microscopic…
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Artikel Jurnal
Hierarchic superradiant phases in anisotropic Dicke model
We revisit the phase diagram of an anisotropic Dicke model by revealing the non-analyticity induced by underlying exceptional points. We find that, from a dynamical perspective, the conventional superradiant phase can be further separated into three regions, in which the systems are characterized…
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Artikel Jurnal
Quantum thermalization beyond non-integrability and quantum scars in a multispecies Bose-Josephson junction
The modern framework for quantum thermalization is grounded in the Eigenstate Thermalization Hypothesis (ETH), in which non-integrability and chaos are historically assumed as prerequisites. This work investigates this relationship in a three-species Bose-Josephson Junction (BJJ) with mutual…
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Artikel Jurnal
Deferred cyclotomic representation for stable and exact evaluation of q-hypergeometric series
We introduce a cyclotomic representation for finite $q$-hypergeometric series and $q$-deformed amplitudes that separates algebraic structure from evaluation. By expressing each summand in a sparse exponent basis over irreducible cyclotomic polynomials, all products and ratios of quantum factorials…
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Artikel Jurnal
Lorentz-equivariance without limitations
Lorentz Local Canonicalization (LLoCa) ensures exact Lorentz-equivariance for arbitrary neural networks with minimal computational overhead. For the LHC, it equivariantly predicts local reference frames for each particle and propagates any-order tensorial information between them. We apply it to…
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Artikel Jurnal
Web of non-invertible dualities for (2+1) dimensional models with subsystem symmetries
We extend non-invertible duality concepts familiar from one-dimensional systems to two spatial dimensions by constructing a web of non-invertible dualities for lattice models with subsystem symmetries. Focusing on $\mathbb{Z}_2×\mathbb{Z}_2$ subsystem symmetry on the square lattice, we construct…
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Artikel Jurnal
Transport properties and thermopower of the spinful Sachdev-Ye-Kitaev dot
We study the electric and thermoelectric transport through a spinful complex Sachdev-Ye-Kitaev (SYK) quantum dot coupled to metallic leads, forming a N-SYK-N junction, by the Keldysh field theory approach. Unlike traditional equilibrium approaches, our formulation treats the system as an open…
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Artikel Jurnal
On truncations of hierarchical equations of motion for finite-dimensional systems
We study truncations of hierarchical equations of motion (HEOM) for finite-dimensional open quantum systems. We prove that for finite-dimensional approximations constructed with a Schur-complement-type terminator, the spectrum converges to that of the full HEOM as the truncation depth increases. We…
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Artikel Jurnal
Quantum phase transition in $\Xi$-configuration Tavis-Cummings model driven by an electromagnetic field for a finite number of atoms
The quantum phase transitions of a three-level Tavis-Cummings model in the $\Xi$-configuration driven by a single-mode electromagnetic field in a QED cavity are studied for $n_a=1,\,2$, and $4$ atoms. Although conventional observables like photon number and energy level populations suffice to…
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Artikel Jurnal
Robustness of the Kohn-Luttinger mechanism against symmetry breaking
We investigate how strongly broken spatial symmetries affect the Kohn-Luttinger (KL) mechanism, in which superconductivity emerges purely from repulsive interactions. While the original KL argument assumes continuous rotational symmetry, real materials possess only discrete point-group symmetries…
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Artikel Jurnal
Multidimensional modeling of the number of local minimum-energy structures and the energy of putative global minima
Using data about the number of local minimal energy structures and the energy of the global minima structures of the Lennard-Jones potential for $9 ≤ N ≤ 16$ atoms and dimension $1 ≤ D ≤ N - 1$, we propose new expressions to extrapolate these quantities taking advantage of the new multidimensional…