In this paper, we investigate new exact and analytic solutions of the Einstein Maxwell field equations describing Casimir wormholes with without effect Generalized Uncertainty Principle (GUP). We consider a specific type GUP relations study three models redshift function along two different EoS state. Here obtain class asymptotically flat wormhole corrections under electric charge. Furthermore check null, weak, strong dominant energy conditions at throat radius, show that classical are...

We consider a dynamical system of phantom scalar field under exponential potential in the background loop quantum cosmology. In our analysis, there is neither stable node nor repeller unstable but only two saddle points, hence no big rip singularity. Physical solutions always possess energy greater than magnitude negative kinetic energy. found that universe bounces after accelerating even domination field. After bouncing, finally enters oscillatory regime.

Several experimental investigations have observed parity violation (PV) in nuclear systems-a consequence of the weak force between quarks. We apply 1/N(c) expansion QCD to P-violating T-conserving component nucleon-nucleon (NN) potential. show there are two leading-order operators, both which affect p[over →]p scattering at order N(c). find an additional four operators N(c)(0)sin(2)θ(W) and six O(1/N(c)). Pion exchange PV NN is suppressed by sin(2)θ(W), providing a quantitative explanation...

Abstract This paper investigates the massive gauge field within spacetime context from a $$\mathbb {Z}_2$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>Z</mml:mi> <mml:mn>2</mml:mn> </mml:msub> </mml:math> quotient of constant curvature black hole. We investigate how matter field’s back reaction affects geometry, considering perturbations in metric up to first order. The stress-energy tensor’s expectation value can be precisely calculated by evaluating its...

In this work, the study of traversable wormholes in $f(R)$-massive gravity with function $f(R)=R+\alpha_{1} R^{n}$, where $\alpha_{1}$ and $n$ are arbitrary constants, is considered. We choose modified shape $b(r)$. consider a spherically symmetric static wormhole metric derive field equations. Moreover, we visualize geometry using embedding diagrams. Furthermore, check null, weak, dominant strong energy conditions at throat radius $r_{0}$ invoking three types redshift functions, $\Phi={\rm...

In this work, we study the rotating wormhole geometries supported by a three-form field. We demonstrate for particular choices of parameters that it is possible matter fields threading to satisfy null and weak energy conditions throughout spacetime, when field present. case, form interpreted as supporting condition violation restricted only 3-form fields. Thus, curvature terms, which may be gravitational fluid, sustain these geometries. Additionally, also address ergoregion solutions.

In this work, we analyze the epidemic data of cumulative infected cases collected from many countries as reported by World Health Organization (WHO). Our inspection is motivated renormalization group (RG) framework. Here propose RG-inspired logistic function form an strength with n being asymmetry in modified function. We perform non-linear least-squares analysis various countries. The uncertainty for model parameters computed using squared root corresponding diagonal components covariance...

In this work, we present the possible existence of a thermalon phase transition between anti-de Sitter (AdS) to de (dS) vacua in Einstein-Gauss-Bonnet gravity by considering R\'{e}nyi statistics. A changes asymptotic structure spacetimes via bubble nucleation spherical thin-shells which host black hole interior. All relevant thermodynamical quantities are computed terms Renyi statistics order demonstrate AdS dS transition. addition, also comment on behaviors transitions

Abstract In this work, the holographic dark energy model is constructed by using non‐extensive nature of Schwarzschild black hole via Rényi entropy. Due to non‐extensivity, can be stable under process fixing parameter. A change undergoing such a would then motivate us define density (RHDE). As result, RHDE with choosing characteristic length scale as Hubble radius provides late‐time expansion without issue causality. Remarkably, proposed contains parameter additional standard model. The...

Abstract The detection of gravitational waves (GWs) from a binary neutron star (BNS) has opened new window on wave astronomy. With current sensitivities, detectable signals coming compact objects like stars turn out to be crucial ingredient for probing their structure, composition, and evolution. Moreover, astronomical observations pulsars mass–radius relations place important constraints the dense matter equation state. In this paper, we consider homogeneous unpaired charge-neutral...

We have studied the $N^*(1875) (3/2^-)$ resonance with a multichannel unitary scheme, considering $Δπ$ and $Σ^* K$, their interaction extracted from chiral Lagrangians, then added two more channels, $N^*(1535) π$ $N σ$, which proceed via triangle diagrams involving K$ respectively in intermediate states. The diagram case develops singularity at same energy as mass. determine couplings of to different channels partial decay widths. find very large width also see that, due interference other...

We apply the large-${N}_{c}$ expansion to time-reversal-invariance-violating (TV) nucleon-nucleon potential. The operator structures contributing next-to-next-to-leading order in counting are constructed. For TV and parity-violating case we find a single structure at leading order. but parity-conserving potential contains two leading-order terms, which, however, suppressed by $1/{N}_{c}$ compared Comparison with phenomenological potentials, including chiral effective field theory case, leads...

In this work, we investigate the dynamics of interacting dark energy and matter in viable models $f(R)$ gravity by using a standard framework dynamical system analysis. A simple form $Q=3\ensuremath{\alpha}H{\ensuremath{\rho}}_{m}$ is used to study three which are consistent with local constraints satisfying conditions for cosmological viability. As result, find that fixed points slightly modified from those obtained noninteracting analysis proposed so far literature. our adding interaction,...

Abstract In this paper, the possible existence of a thermal phase transition from asymptotic anti‐de Sitter (AdS) to de (dS) geometries in vacuum context novel fourdimensional Einstein–Gauss–Bonnet (4D EGB) gravity is presented. The proceeds via thermalon (the Euclidean section bubble thin shell) formation, having black hole dS spacetime and AdS exterior, without introducing any matter field. From analysis, it found that, using regularized 4D EGB gravity, gravitational transitions occur for...

In this work, we propose unified picture of inflation and dark matter in the Higgs–Starobinsky (HS) model. As pointed out literature, Starobinsky $$R^2$$ is induced by quantum correction effect from large Higgs-curvature (graviton) coupling. We start with non-minimal coupling HS action Jordan frame. then transform frame into Einstein one using conformal transformation. The potential derived gravitational non-minimal-Higgs term where dominated inflationary phase universe. For model inflation,...

We investigate two-pion emission decays of singly charmed and bottom baryons, focusing on <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msubsup><a:mrow><a:mi mathvariant="normal">Λ</a:mi></a:mrow><a:mrow><a:mi>Q</a:mi></a:mrow><a:mrow><a:mo>*</a:mo></a:mrow></a:msubsup><a:mo stretchy="false">(</a:mo><a:mn>1</a:mn><a:mi>P</a:mi><a:mo stretchy="false">)</a:mo></a:mrow></a:math> <f:math xmlns:f="http://www.w3.org/1998/Math/MathML"...

The chiral $SU(3)$ Lagrangian with charmed baryons of spin ${J}^{P}=1/{2}^{+}$ and ${J}^{P}=3/{2}^{+}$ is analyzed. We consider all counterterms that are relevant at next-to-next-to-next-to-leading order (${\mathrm{N}}^{3}\mathrm{LO}$) in a extrapolation the baryon masses. At ${\mathrm{N}}^{2}\mathrm{LO}$ we find 16 low-energy parameters. There three mass parameters for antitriplet two sextet baryons, six describing meson-baryon vertices seven symmetry breaking heavy-quark predicts four sum...

We consider contributions of the open-string singlet~(OSS) interaction to proton-proton scattering. Modelling baryon and meson as instanton open string in effective QCD model, typical pomeron is identified with a massive spin-2 closed string. According open-closed duality, accompanied by singlet universal coupling. The flat space 4-point amplitudes cross sections are computed Regge limit. Including both pomerons, we fit differential cross-section experimental data proton-antiproton...

In this work, we investigate the Higgs-Starobinsky (HS) model in context of warm inflation scenario. The dissipative parameter as a linear form temperature is considered with strong and weak regimes. We study HS Einstein frame slow-roll framework. compute inflationary observables then compare Plank 2018 data. With sizeable number e-folds proper choices parameters, discover that predictions present work are very good agreement latest Planck results. More importantly, parameters also...

Abstract In this work, we study the thin-shell wormholes in dRGT massive gravity. order to glue two bulks of spacetime geometry, first derive junction conditions spacetime. We obtain dynamics spherical theory. show that graviton correction term theory Einstein equation is represented terms effective anisotropic pressure fluid. However, if there only term, without invoking exotic fluids, find cannot be stabilized. then examine stability by introducing four existing models fluids at throat....

The chiral $SU(3)$ Lagrangian with pseudoscalar and vector $D$ mesons the octet decuplet baryons is considered. leading two-body counter terms involving two baryon fields meson are constructed in open-charm sector. There 26 terms. A combined expansion inverse of charm quark mass number colors provides sum rules that reduce free parameters down to 5 only. Our result shows feasibility a systematic computation spectrum based on coupled-channel dynamics.

In this paper, we study the deflection angle of light by traversable wormholes, which are supported three-form fields. The specific forms redshift and shape functions that produce results compatible with energy conditions at throat wormholes used. Having used well-defined parameter sets investigate photon geodesic motion under effective potential wormhole background. As a result, discover radius sphere is very useful observable to analyze geometrical structures physical wormhole.