We study an extension of symmetric teleparallel gravity i.e. Weyl-type f(Q,T) and the divergence-free parametrization deceleration parameter q(z)=q0+q1z(1+z)1+z2 (q0 q1 are free constants) to explore evolution universe. By considering above parametric form q, we derive Hubble solution further impose it in Friedmann equations gravity. To see whether this model can challenge ΛCDM limits, computed...

by the chain rule, so DG(0) = Id. Thus, G satisfies the assumptions of the theorem with p0, q0 resp. DF (p0) replaced by 0, 0, resp. Id. If we show that G is invertible as stated, then F(z) = p0 +G ((DF )(p0) (z − q0)) for z near q0. Indeed, substituting in z = F (p0 + y) gives F (F (p0 + y)) = p0 +G (G(y)) = p0 + y, and F (F (q0 + z)) = q0 + z is also easy to check. So from now on we assume th...

We study an extension of symmetric teleparallel gravity i.e. Weyl-type f(Q,T) and the divergence-free parametrization deceleration parameter q(z)=q0+q1z(1+z)1+z2 (q0 q1 are free constants) to explore evolution universe. By considering above parametric form q, we derive Hubble solution further impose it in Friedmann equations gravity. To see whether this model can challenge ?CDM limits, computed...

We calculate the electronic polarizability in the superconducting state near extremum vectors ~ Q0 of the Fermi surface. A pole appears in the polarizability at frequencies ω near the superconducting gap 2∆ which leads to a sharp peak at ω just below 2∆ in the lattice vibrations near ~ Q0. A second order transition to a charge density wave state below the superconducting transition is shown to ...

In this paper, we consider the initial value problem for mixed Schrödinger equation. For Schwartz data q0(x)∈S(R), by defining a general analytical domain and two reflection coefficients, ever found an unified long-time asymptotic formula via Deift–Zhou nonlinear steepest descent method. under essentially minimal regularity assumptions on in much weak weighted Sobolev space q0(x)∈H2,2(R), apply...

Assume that the problem Q0 is not solvable in polynomial time. For theories T containing a sufficiently rich part of true arithmetic we characterize T ∪ {ConT } as the minimal extension of T proving for some algorithm that it decides Q0 as fast as any algorithm B with the property that T proves that B decides Q0. Here, ConT claims the consistency of T . Moreover, we characterize problems with a...

Weak gravitational lensing by large-scale structure affects the determination of the cosmological deceleration parameter q0. We find that the lensing induced dispersions on truly standard candles are 0.04 and 0.02 mag at redshift z = 1 and z = 0.5, respectively, in a COBE-normalized cold dark matter universe with Ω0 = 0.40, Λ0 = 0.6, H = 65km/s/Mpc and σ8 = 0.79. It is shown that one would obse...

For decades, H0 and q0 were the quest of cosmology, as they promised to characterize our “world model” without reference to a specific cosmological framework. Using Monte Carlo simulations, we show that q0 cannot be directly measured using distance indicators with both accuracy (without offset away from its true value) and precision (small error bar). While H0 can be measured with accuracy and ...

This review and data analysis outline how fish biologists should most reliably estimate the minimal amount of oxygen needed by a fish to support its aerobic metabolic rate (termed standard metabolic rate; SMR). By reviewing key literature, it explains the theory, terminology and challenges underlying SMR measurements in fishes, which are almost always made using respirometry (which measures oxy...