Examination of Sufficient Conditions for Forming Mass of “Massive Graviton”, from Early Universe ()

Andrew Walcott Beckwith^{*}

Physics Department, College of Physics, Chongqing University Huxi Campus, Chongqing, China.

**DOI: **10.4236/jhepgc.2017.31006
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Physics Department, College of Physics, Chongqing University Huxi Campus, Chongqing, China.

We start with a formulation of a modified “Poisson” equation from Poissons and Will as of 2014, and then use the Padmanabhan inter relationship between an inflaton and an early universe potential system. Then from there, we come up with a quadratic equation for a minimum radius, for producing a “massive graviton” value. We then close with observations as to what this implies as to gravitational physics.

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Beckwith, A. (2017) Examination of Sufficient Conditions for Forming Mass of “Massive Graviton”, from Early Universe. *Journal of High Energy Physics, Gravitation and Cosmology*, **3**, 34-38. doi: 10.4236/jhepgc.2017.31006.

1. What Is Important about the Modified Poissons Equation [1] ?

We will first of all refer to two necessary and sufficient conditions for the onset of a massive graviton given in [1] , and combined with Padmanablan’s reference [2] .

i.e. what we will be doing is to re do the reference calculations given in [1] with

(1)

Here, we will be using in the Pre Planckian potential the inputs from the data usually associated with [2]

(2)

In other words, we will be using the inflation given by

(3)

If so, then our approximation is to call the Potential in Equation (2) to be the same as U in Equation (1), and then with re arrangements we come up with the following

(4)

Then, after algebra, we have the following

(5)

The quadratic Equation this engenders is, how to say

(6)

A candidate for the density functional will come next, with the way of obtaining a critical value for r.

2. Density Functional Inserted into Equation (6)

In [3] we make the assumption, namely

(7)

As far as applications to: [1]

(8)

Then if we use

(9)

Then if we are looking at extremely small times in the inflaton, the above becomes

(10)

Or

(11)

We claim, that warts and all, this is a first order approximation as to the distance, from the moment of creation, for definitive acquisition for a “mass” to a massive graviton, and it is a definitive restraint.

3. Conclusion. A Very Strange, Not Necessarily Real Valued Initial Radial Condition

Possibly to incorporate some sort of measurement protocol, for Equation (8) this equation would have to be the absolute magnitude. This has yet to be determined in discussions the author will have with members of the HFGW in Chongqing University. But what is noticeable, is that the inflaton equation as given by Padmanabhan [2] hopefully will not be incommensurate with the physics of the Corda Criteria given in the Gravity’s breath document [4] . Keep in mind the importance of the result from reference [5] below which forms the core of Equation (12) below

(12)

We should also attempt to assure fidelity with Equation (8) above, in what work we are doing.

Furthermore, we should keep in mind the physics incorporated in [6] [7] , i.e. as to the work of LIGO. i.e. it is important to keep in mind that in addition, that [8] has confirmed that a subsequent analysis of the event GW150914 by the LSC constrained the graviton Compton wavelength of those alternative theories of gravity in which the graviton is massive and placed a level of 90% confidence on the lower bound of 10^{13} km for a Compton wavelength of the graviton. This will in its own way subsequently add additional rigor to the analysis of the graviton mass stated in Equation (9) as well as the Compton wavelength lower bound as given in Equation (1) above.

Doing these sort of vetting protocols is the same as with being consistent with investigation as to a real investigation as to the fundamental nature of gravity. i.e. is this a way to show if general relativity is the final theory of gravitation. i.e., if massive gravity is confirmed, as given in [9] , then GR is perhaps to be replaced by a scalar-tensor theory, as has been shown by Corda.

Acknowledgements

This work is supported in part by National Nature Science Foundation of China grant No. 11375279.

Conflicts of Interest

The authors declare no conflicts of interest.

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[2] |
Padmanabhan, T. (2005) Understanding Our Universe, Current Status and Open Issues. In: Ashatekar, A., Ed., 100 Years of Relativity, Space-Time Structure: Einstein and Beyond, World Scientific Publishing Co. Pte. Ltd., Singapore, 175-204. http://arxiv.org/abs/gr-qc/0503107 |

[3] |
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[8] |
Abbott, B.P., et al. Tests of general relativity with GW150914. https://arxiv.org/pdf/1602.03841.pdf |

[9] |
Corda, C. (2009) Interferometric Detection of Gravitational Waves: The Definitive Test for General Relativity. International Journal of Modern Physics D, 18, 2275-2282. https://arxiv.org/abs/0905.2502 https://doi.org/10.1142/S0218271809015904 |

[10] |
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