The structure of the graviton self-energy at finite temperature
نویسندگان
چکیده
We study the graviton self-energy function in a general gauge, using a hard thermal loop expansion which includes terms proportional to T 4, T 2 and log(T ). We verify explicitly the gauge independence of the leading T 4 term and obtain a compact expression for the sub-leading T 2 contribution. It is shown that the logarithmic term has the same structure as the ultraviolet pole part of the T = 0 self-energy function. We argue that the gauge-dependent part of the T 2 contribution is effectively canceled in the dispersion relations of the graviton plasma, and present the solutions of these equations. 11.10.Wx Typeset using REVTEX 1
منابع مشابه
Inhomogeneous Effects of Temperature Change on the Velocity of Railgun in Three Dimensional Condition
In the Railgun which is used to accelerate objects, electrical energy is used to drive the system. In order to reach hypervelocities, a power supply with immense amount of energy must be used which causes an extra ordinary current on the rail and the armature. This current makes thermal energy by the ohmic attenuation and warms up various points and therefore changes the electrical, thermal and...
متن کاملThe graviton self-energy in thermal quantum gravity
We show generally that in thermal gravity, the one-particle irreducible 2point function depends on the choice of the basic graviton fields. We derive the relevant properties of a physical graviton self-energy, which is independent of the parametrization of the graviton field. An explicit expression for the graviton self-energy at high-temperature is given to one-loop order.
متن کاملGeneral structure of the graviton self-energy
The non-linear relation imposed by gauge invariance on the thermal self-energy of gluons, has been recently discussed by Weldon in an interesting paper [1]. He proved that in QCD, the Slavnov-Taylor identities [2,3] require a non-linear constraint among the structure functions which occur at finite temperature. In this brief report, we show that a similar behavior occurs in the gauge theory of ...
متن کاملCalculation of Thermodynamic Properties of the Quasi-one Dimensional Liquid 3He at Finite Temperature
We have used a variational approach to calculate some thermodynamic properties of the quasi-one dimensional liquid 3He such as the energy, entropy, free energy, equation of state and heat capacity at finite temperature. We have employed the Lennard-Jones potential as the inter-atomic interaction. We have seen that the total energy increases by increasing both temperature and density....
متن کاملScalar Matter Coupled to Quantum Gravity in the Causal Approach: Finite One-Loop Calculations and Perturbative Gauge Invariance
Quantum gravity coupled to scalar massive matter fields is investigated within the framework of causal perturbation theory. One-loop calculations include matter loop graviton self-energy and matter self-energy and yield ultraviolet finite and cutoff-free expressions. Perturbative gauge invariance to second order implies the usual Slavnov–Ward identities for the graviton self-energy in the loop ...
متن کامل