Papermog

Open questions in collisionless plasma dissipation can be addressed using space based observations in different astrophysical environments, with implications for both astrophysical and laboratory plasma systems. We study a low $β$, highly imbalanced, sub Alfvénic stream observed by Parker Solar Probe (PSP) to identify and distinguish between signatures of stochastic heating (SH) and resonant heating (RH) by parall...

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Space & PhysicsarXiv2026-07-13Preprint (40)

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Reconstructing the kinematics of Laniakea using Type Ia Supernovae

Francesco Sorrenti, Erick Pastén, Leonardo Giani

We develop a kinematic framework that relates the monopole, dipole, and quadrupole of the luminosity distance to an ellipsoidal peculiar velocity field describing the dynamics of the Laniakea supercluster. By properly accounting for the transformations between the CMB and Laniakea reference frames and selecting Type Ia supernovae within the volume associated with the superstructure, we show that luminosity distanc...

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Space & PhysicsarXiv2026-07-13Preprint (60)

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Corrected thermodynamics and radiation predictions of modified black bounce compact objects

Shokhzod Jumaniyozov, Javlon Rayimbaev, Yassine Sekhmani et al.

We study the thermodynamic properties and radiation characteristics of a regular compact object obtained by applying the Simpson Visser regularisation to the Schwarzschild black hole in modified gravity. The resulting SV MOG spacetime, whose lapse function involves both the MOG coupling parameter and the black bounce parameter, smoothly interpolates between a regular black hole, a one way wormhole, and a traversab...

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Space & PhysicsarXiv2026-07-13Skeptical (25)

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Higher-derivative gravitational effective field theories are generically weakly hyperbolic

Farid Thaalba, Fernando Abalos, Miguel Bezares

We analyse the initial value problem of metric higher derivative effective theories of gravity. We show that any such theory whose characteristic velocities are independent of derivatives of the metric is intrinsically weakly hyperbolic, independently of the gauge fixing. To show this, we identify the spin $2$ physical sector directly from the characteristic equation; this can be done without introducing an order ...

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Space & PhysicsOpenAlex2026-07-13Skeptical (30)

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The Generative Anthropocene: A Policy and Technology Roadmap for Mitigating the Escalating Energy and CO2 Burden of Advanced AI

Daniel Morrell

The exponential proliferation of <b Generative Artificial Intelligence (GAI)</b , specifically its resource intensive inference phase for applications such as high fidelity video synthesis, constitutes a critical and largely unaddressed challenge to global climate mitigation efforts. This paper presents a granular analysis of the burgeoning CO2 burden and proposes a comprehensive, two track mitigation roadmap: <b ...

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Space & PhysicsOpenAlex2026-07-13Verified (78)

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Alcubierre warp drive — boundary-mode reformulation: notebooks, sweeps, and verification artifacts

Brian Sheppard

Personal landscape exploration of whether the exotic matter requirement of the Alcubierre warp drive metric can be reinterpreted as a boundary effect (Casimir analog) or evaded via classical anisotropic matter shells (Fuchs et al. 2024 anchor). This deposit archives the full research repository at the tagged release: SymPy/NumPy derivation notebooks, parameter sweep modules, the clean room Python port of the Warp ...

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Space & PhysicsarXiv2026-07-13Preprint (50)

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LoRA-Based Cascaded Multimodal Fusion for Action Recognition in Medical Training Environments

Divya Mereddy, Jeevan Beedareddy

This paper presents a cascaded Low Rank Adaptation (LoRA) based multimodal fusion framework for action and activity recognition in healthcare oriented training environments. The proposed architecture combines parameter efficient modality specific adaptation with sequential fusion, enabling modalities to be integrated in stages without retraining previously learned components. Rather than assuming a fixed fusion st...

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Space & PhysicsarXiv2026-07-13Preprint (65)

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Anisotropic separate universe : Long-wavelength perturbations and conserved quantities

Daiki Saito, Atsushi Naruko

We investigate the long wavelength evolution of linear perturbations in a homogeneous and anisotropic background with a scalar field coupled to a vector field. Using the spatial gradient expansion in the uniform $\mathcal{N}$ gauge in which the number of $e$ folds is unperturbed, we derive the complete set of superhorizon solutions and establish their correspondence with infinitesimal variations of the homogeneous...

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Space & PhysicsOpenAlex2026-07-13Preprint (55)

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Numerical Investigation of Neon Soft X-ray and Ion Beam Characteristics in BARC Plasma Focus Device

M I Nayeem, M Mostafizur Rahman

A numerical investigation on the Bhabha Atomic Research Centre (BARC) plasma focus (PF) machine has been performed with the Lee model code (RADPF5. 16FIB) for characterizations of SXR emission and the ion beam using neon (Ne) as a working gas. The simulations were run using the device set at 11.5 kJ capacitor bank energy, and the results analyzed at various operating pressures and electrode geometries. For SXR emi...

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Space & PhysicsarXiv2026-07-13Preprint (43)

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Universal Bounds on Black Hole Observables Imposed by Energy Conditions

Rahul Kumar Walia, Boris Georgiev, Chi-kwan Chan

We establish a universal connection between the classical energy conditions and directly observable black hole properties. By imposing the energy conditions locally at the photon sphere, we derive analytic and testable bounds on the shadow size, Lyapunov exponent, Lyapunov time, and photon ring time delay that apply to all static, spherically symmetric black holes in General Relativity. Expressed equivalently in t...

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Space & PhysicsarXiv2026-07-13Preprint (52)

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Ice Deposition Fronts In Porous Bodies From Transient Heating Events In a Protoplanetary Disk

Stephen Li, Alice C. Quillen, Adam E. Rubinstein et al.

Using a 1D mass and heat transport model, we numerically integrate heat flow and gas transport in a porous body exposed to a transient heating event while embedded in a protoplanetary disk. When small icy grains are heated, volatiles sublimate, enriching the disk with volatile gases. When a porous body enters this heated, volatile rich environment, volatile gases diffuse throughout the cool, porous body and deposi...

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Space & PhysicsOpenAlex2026-07-13Verified (70)

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Lifecycle Governance in Adaptive Closed-Loop Neurotechnology: Temporal Mismatch and the Problem of Responsibility Diffusion

Kristina Balać

Adaptive closed loop neurotechnologies, including adaptive deep brain stimulation, responsive neuroprosthetics, and bidirectional brain–computer interfaces, increasingly operate through continuous feedback between neural activity and computational systems, producing functional outcomes that evolve after deployment (Little et al., 2013; Widge et al., 2018; Fleming et al., 2020). Existing neuroethical governance fra...

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Space & PhysicsOpenAlex2026-07-13Preprint (61)

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Diffusion Latent Representations for Neural Decoding

Brandon Wong, Brokoslaw Laschowski

Neural decoding can be viewed as a representation learning problem in which neural activity is mapped into an intermediate representation before downstream reconstruction. The choice of intermediate representation influences both performance and learning difficulty. Here we developed a novel framework for studying how intermediate representation choice influences downstream learning and reconstruction. As a proof ...

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Space & PhysicsOpenAlex2026-07-13Skeptical (0)

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Research on New Clean Energy Development Based on Electron Photon Cage Dissociation Mechanism

Jiaqing Yan

Based on the photon cage theory of the unified light origin field, free electrons are microscopic steady state clusters bound by self locked high density photons, with definite upper critical thresholds for saturation dissociation and lower critical thresholds for energy dissipation collapse. Relying on the fundamental theories and thought experiments presented in Research on the Measurement of Upper and Lower Cri...

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Space & PhysicsOpenAlex2026-07-13Skeptical (0)

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Research on Ultra-High Power Mass-Energy Development Based on Proton Photon Cage Dissociation Mechanism

Jiaqing Yan

Supported by the photon cage theory of the unified light origin field and the fundamental theoretical conclusions from Research on the Measurement of Upper and Lower Critical Energy Thresholds of Free Protons — Based on the Resonance Dissociation Mechanism of Photon Cages, free protons are formed by self locked high density gamma photons with triggerable critical saturation dissociation thresholds. Continuous ener...

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Space & PhysicsOpenAlex2026-07-12Skeptical (5)

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The Equation of Absolutes and the CERN Paradox: The Simultaneity between Zero, Infinity, and Primordial Intelligence

Gustavo Alves Condé

This paper proposes a radical ontological, cosmological, and mathematical formulation of the Universe, merging the conceptual foundations of the "Equation of Absolutes" with the raw empirical evidence collected at CERN's Large Hadron Collider (LHC). It argues that the standard cosmological model (Big Bang) and the linear chronological timeline of 13.8 billion years are rooted in a geometric illusion that confuses ...

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Space & PhysicsOpenAlex2026-07-12Preprint (55)

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Numerical Analysis of Hysteresis Losses in High Current Carrying CORC Cables

Xiaoran Xu, Yangyang Shi, Tao Ma et al.

Abstract Conductor on Round Core (CORC) cables, with their exceptional current carrying capacity and flexibility, are key candidates for fusion devices. The enormous heat generated by the AC loss of CORC cables under high current conditions can seriously impair the stable operation of the entire fusion device. Therefore, an analysis of the AC loss characteristics of high current CORC cables is essential. However, ...

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Space & PhysicsOpenAlex2026-07-12Skeptical (0)

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The Equation of Absolutes: The Simultaneity between Zero, Infinity, and Primordial Consciousness and its Implications for Theoretical Physics and Civilizational Evolution

Gustavo Alves Condé

ABSTRACT This work proposes an ontological, cosmological, and mathematical reformulation of the Universe, shifting the focus of traditional scientific investigation from the edges of material expansion to the nature of absolute nothingness (zero). It argues that the standard cosmological model (Big Bang) and the chronological count of 13.8 billion years are based on a geometric and linear illusion that confuses th...

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Space & PhysicsOpenAlex2026-07-11Skeptical (15)

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A Unified Field Framework Linking Gravity, the Coulomb Force, and the Lorentz Force via Effective Mass and Wave Superposition Applications to Nuclear Fusion and Astrophysical Accretion Disks

takashi ueda

We present an exploratory unified framework based on the concept of nonequilib rium energy derived from a scalar field D, representing the contribution of spacetime distortion within the Unified Field Framework (UFF). Matter is modeled as a fi nite, axially symmetric distortion of energy, with charge and space hypothesized to be dimensionally equivalent. This allows mass and charge to be combined into a single eff...

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Space & PhysicsOpenAlex2026-07-11Verified (84)

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Are Petrov type-N and D spacetimes admitting CTCs valid in $$f(R,\mathcal {L}_m,\Phi ,X)$$ gravity?

Faizuddin Ahmed, Ahmad Al‐Badawi, İzzet Sakallı et al.

Abstract We ask whether two classical time machine geometries, the Ori (2005) compact vacuum core metric and the Ahmed (2018) four dimensional generalisation of Misner space, remain admissible exact solutions when the gravitational sector is enlarged to the recently proposed $$f(R,\mathcal {L} {m},\Phi ,X)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" <mml:mrow <mml:mi f</mml:mi <mml:mo (</mml:mo <mml...

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