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Dissipation of oscillating scalar backgrounds in an FLRW universe
We study the dissipation of oscillating scalar backgrounds in a spatially flat Friedmann-Lemaître-Robertson-Walker universe using non-equilibrium...
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Existence and non-existence of constant scalar curvature and extremal Sasaki metrics
We discuss the existence and non-existence of constant scalar curvature, as well as extremal, Sasaki metrics. We prove that the natural...
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Applications of certain maximum principles to gradient k-Yamabe solitons
In this short note, we deal with gradient k -Yamabe solitons whose Ricci curvature is non-positive in the direction of the gradient of its potential...
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Direct RL with Policy Gradient
In direct RL, a parameterized policy is searched for by optimizing a predefined objective function. The term “direct” indicates that it does not rely...
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Dimension-8 SMEFT analysis of minimal scalar field extensions of the Standard Model
We analyze the constraints obtainable from present data using the Standard Model Effective Field Theory (SMEFT) on extensions of the Standard Model...
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On Gradient Shrinking and Expanding Kähler–Ricci Solitons
We prove that a compact gradient shrinking Kähler–Ricci soliton with subharmonic scalar curvature is Kähler–Einstein. Moreover, we show that a...
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Asymptotic scalar field cosmology in string theory
Asymptotic (late-time) cosmology depends on the asymptotic (infinite-distance) limits of scalar field space in string theory. Such limits feature an...
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Doubly Accelerated Proximal Gradient for Nonnegative Tensor Decomposition
The accelerated proximal gradient (APG) is a classical algorithm for nonnegative tensor decomposition. The APG employs variable extrapolation to...
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Quantum computation of phase transition in interacting scalar quantum field theory
It has been demonstrated that the critical point of the phase transition in scalar quantum field theory with a quartic interaction in one space...
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Gradient-based algorithms for multi-objective bi-level optimization
Multi-objective bi-level optimization (MOBLO) addresses nested multi-objective optimization problems common in a range of applications. However, its...
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Scalar, Multidimensional Variational Problems
Once we have established a solid functional-analytical foundation, we are ready to tackle multidimensional variational problems in which we pretend...
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Variable selection in function-on-scalar single-index model via the alternating direction method of multipliers
We develop a new method for variable selection in a function-on-scalar single-index model. The proposed method goes beyond existing additive...
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A new continuous printing path planning method for gradient honeycomb infill structures
Cellular infill structures such as honeycomb have been widely used in the field of light weighting. In recent years, the emergence of additive...
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Negative scalar potentials and the swampland: an Anti-Trans-Planckian Censorship Conjecture
In this paper, we derive a characterisation of negative scalar potentials, V < 0, in d -dimensional effective theories of quantum gravity. This is...
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On Scalar Curvature of r-Almost Newton–Ricci Solitons
The aim of this work is to study the scalar curvature of an r -almost-Newton–Ricci soliton immersed in a Riemannian manifold introduced by Cunha...
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Nonlinear conjugate gradient for smooth convex functions
The method of nonlinear conjugate gradients (NCG) is widely used in practice for unconstrained optimization, but it satisfies weak complexity bounds...
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Charge transfer between rotating complex scalar fields
We consider the transfer of a U(1) charge density between Bose-Einstein condensates of complex scalar fields coupled to a thermal bath, focusing on...
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Defects in scalar field theories, RG flows and dimensional disentangling
We consider defect operators in scalar field theories in dimensions d = 4 − ϵ and d = 6 − ϵ with self-interactions given by a general marginal...
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Prescribing Morse Scalar Curvatures
In this paper we survey some results on the classical Kazdan–Warner problem, consisting in the conformal prescription of the scalar curvature of a...
