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On the Dynamics of Phase Transitions in Relativistic Scalar Field Theory
AbstractWe study the Kibble–Zurek scaling dynamics and universal second order phase transitions in a relativistic scalar field theory in 1 + 1...
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AdS/BCFT with brane-localized scalar field
In this paper, we study the dynamics of end-of-the-world (EOW) branes in AdS with scalar fields localized on the branes as a new class of gravity...
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Quantum Corrections to the Effective Potential in Generalized Models with a Scalar Field
AbstractA renormalization group (RG) equation for the effective potential is constructed in the approximation of leading logarithms, which is valid...
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Phases of surface defects in Scalar Field Theories
We study mass-type surface defects in a free scalar and Wilson-Fisher (WF) O ( N ) theories. We obtain exact results for the free scalar defect,...
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Logamediate Inflation in DGP Cosmology Driven by a Non-Canonical Scalar Field
AbstractThe main properties of the logamediate inflation driven by a non-canonical scalar field in the framework of DGP braneworld gravity are...
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Unfolded dynamics approach and quantum field theory
We study quantization of a self-interacting scalar field within the unfolded dynamics approach. To this end we find and analyze a classical unfolded...
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Momentum-space entanglement in scalar field theory on fuzzy spheres
Quantum field theory defined on a noncommutative space is a useful toy model of quantum gravity and is known to have several intriguing properties,...
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Critical scalarization and descalarization of black holes in a generalized scalar-tensor theory
We study the critical dynamics in scalarization and descalarization in the fully nonlinear dynamical evolution in the class of theories with a scalar...
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Scalar field as a perfect fluid: thermodynamics of minimally coupled scalars and Einstein frame scalar-tensor gravity
We revisit the analogy between a minimally coupled scalar field in general relativity and a perfect fluid, correcting previous identifications of...
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Evolution of scalar field resonances in a braneworld
In this work, we investigate the numerical evolution of massive Kaluza–Klein (KK) modes of a scalar field in a thick brane. We derive the...
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A Note on the Arrow of Time in Nonminimally Coupled Scalar Field FRW Cosmology
AbstractWe revisit the cyclic Universe scenario in scalar field FRW cosmology and check its applicability for a nonminimally coupled scalar field. We...
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Solutions of a charged scalar field in five-dimensional helicoid solution with electromagnetic field
We study a charged and massive scalar field in the background of the Nutku-Ghezelbash-Kumar metric which is obtained by the addition of a time...
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Localization of scalar field on the brane-world by coupling with gravity
In this paper, we consider a coupling mechanism between the kinetic term and the gravity, in which a coupling function F ( R ) is introduced into the...
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Correlation Function of a Random Scalar Field Evolving with a Rapidly Fluctuating Gaussian Process
We consider a scalar field governed by an advection–diffusion equation (or a more general evolution equation) with rapidly fluctuating, Gaussian...
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One-loop algebras and fixed flow trajectories in adjoint multi-scalar gauge theory
We study the one loop renormalisation of 4d SU( N ) Yang-Mills theory with M adjoint representation scalar multiplets related by O( M ) symmetry. General M ...
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Effective action of a self-interacting scalar field on brane
In extra dimensional theories, the four-dimensional field theory is reduced from a fundamental field theory in the bulk spacetime by integrating the...
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Scalar propagator in a background gluon field beyond the eikonal approximation
We investigate the path integral representation of the scalar propagator in a background gluon field, extending beyond the eikonal approximation by...
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Nonlocal quantum field theory and quantum entanglement
We discuss the nonlocal nature of quantum mechanics and the link with relativistic quantum mechanics such as formulated by quantum field theory. We...