<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE article  PUBLIC "-//NLM//DTD Journal Publishing DTD v3.0 20080202//EN" "http://dtd.nlm.nih.gov/publishing/3.0/journalpublishing3.dtd"><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" dtd-version="3.0" xml:lang="en" article-type="research article"><front><journal-meta><journal-id journal-id-type="publisher-id">JHEPGC</journal-id><journal-title-group><journal-title>Journal of High Energy Physics, Gravitation and Cosmology</journal-title></journal-title-group><issn pub-type="epub">2380-4327</issn><publisher><publisher-name>Scientific Research Publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.4236/jhepgc.2016.24040</article-id><article-id pub-id-type="publisher-id">JHEPGC-69977</article-id><article-categories><subj-group subj-group-type="heading"><subject>Articles</subject></subj-group><subj-group subj-group-type="Discipline-v2"><subject>Physics&amp;Mathematics</subject></subj-group></article-categories><title-group><article-title>
 
 
  Addition to the Article with Stepan Moskaliuk on the Inter Relationship of General Relativity and (Quantum) Geometrodynamics, via Use of Metric Uncertainty Principle
 
</article-title></title-group><contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Andrew</surname><given-names>Walcott Beckwith</given-names></name><xref ref-type="aff" rid="aff1"><sub>1</sub></xref><xref ref-type="corresp" rid="cor1"><sup>*</sup></xref></contrib></contrib-group><aff id="aff1"><label>1</label><addr-line>Physics Department, College of Physics, Chongqing University Huxi Campus, Chongqing, China</addr-line></aff><author-notes><corresp id="cor1">* E-mail:<email>rwill9955b@gmail.com</email></corresp></author-notes><pub-date pub-type="epub"><day>23</day><month>08</month><year>2016</year></pub-date><volume>02</volume><issue>04</issue><fpage>467</fpage><lpage>471</lpage><history><date date-type="received"><day>July</day>	<month>4,</month>	<year>2016</year></date><date date-type="rev-recd"><day>Accepted:</day>	<month>August</month>	<year>20,</year>	</date><date date-type="accepted"><day>August</day>	<month>23,</month>	<year>2016</year></date></history><permissions><copyright-statement>&#169; Copyright  2014 by authors and Scientific Research Publishing Inc. </copyright-statement><copyright-year>2014</copyright-year><license><license-p>This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/</license-p></license></permissions><abstract><p>
 
 
  We take note of the material offered in [1] as to Geometrodynamics as a way to quantify an inter relationship between a quantum style Heisenberg uncertainty principle for a metric tensor and conditions postulated as to a barotropic fluid, 
  i.e. dust for early universe conditions. By looking at the onset of processes at/shorter than a Planck Length, in terms of initial expansion of the universe, we use inputs from the metric tensor as a starting point for the variables used in Geometrodynamics.
 
</p></abstract><kwd-group><kwd>General Relativity</kwd><kwd> Geometrodynamics</kwd><kwd> Metric Uncertainty Principle</kwd></kwd-group></article-meta></front><body><sec id="s1"><title>1. Introduction</title><p>We will be using, the inputs from [<xref ref-type="bibr" rid="scirp.69977-ref1">1</xref>] extensively as a way to intertwine the predictions as to a HUP connected with the metric tensor of space-time and the resulting initial conditions for space-time according to Geometrodynamics. The end result will be that we are supplying initial conditions which cannot be obtained, by other means. We also will quantify via a version of dust dynamics, how this affects candidate DM and possibly DE contributions to initial cosmological conditions. To do this, we will review the concepts used in both the Heisenberg Uncertainty principle, for metric tensors, and the Geometrodynamics equations used. The conclusion of what we are talking about is use of the HUP, for metric tensors to form bounds on the Getrodynamics equations in the pre Planckian space-time era.</p></sec><sec id="s2"><title>2. HUP for Metric Tensors Used</title><p>We will be examining a Friedmann equation for the evolution of the scale factor, using explicitly two cases, one case being when the acceleration of expansion of the scale factor is kept in, another when it is out, and the intermediate cases of when the acceleration factor, and the scale factor is important but not dominant. In doing so we will be tying it in our discussion with the earlier work done on the HUP but from the context of how the acceleration term will affect the HUP, and making sense of</p><disp-formula id="scirp.69977-formula76"><label>(1)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x2.png"  xlink:type="simple"/></disp-formula><p>Namely we will be working with</p><disp-formula id="scirp.69977-formula77"><label>(2)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x3.png"  xlink:type="simple"/></disp-formula><p>i.e. the fluctuation <inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x4.png" xlink:type="simple"/></inline-formula> dramatically boost initial entropy. Not what it would be if<inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x5.png" xlink:type="simple"/></inline-formula>. The next question to ask would be how could one actually have</p><disp-formula id="scirp.69977-formula78"><label>. (3)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x6.png"  xlink:type="simple"/></disp-formula><p>In short, we would require an enormous “inflaton” style <inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x7.png" xlink:type="simple"/></inline-formula> valued scalar function, and <inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x8.png" xlink:type="simple"/></inline-formula> How could <inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x9.png" xlink:type="simple"/></inline-formula> be initially quite large? Within Planck time the following for mass holds, as a lower bound</p><disp-formula id="scirp.69977-formula79"><label>. (4)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x10.png"  xlink:type="simple"/></disp-formula><p>Here, we are using the following approximation as to Kinetic energy in the beginning of the expansion of the universe.</p><disp-formula id="scirp.69977-formula80"><label>(5)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x11.png"  xlink:type="simple"/></disp-formula><p>Then, up to first order, we could approximate, with H.O.T. being higher order terms</p><disp-formula id="scirp.69977-formula81"><label>. (6)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x12.png"  xlink:type="simple"/></disp-formula><p>This Equation (6) will be considerably refined in the subsequent document.</p></sec><sec id="s3"><title>3. The Role of Geometrodynamics. And How Equation (2) May Be Applied</title><p>From Equation (48) of [<xref ref-type="bibr" rid="scirp.69977-ref1">1</xref>] we have</p><disp-formula id="scirp.69977-formula82"><label>(7)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x13.png"  xlink:type="simple"/></disp-formula><p>Here, we can also, from [<xref ref-type="bibr" rid="scirp.69977-ref1">1</xref>] assign a density functional and then a change of energy as given by<inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x14.png" xlink:type="simple"/></inline-formula>. So then, that one will have</p><disp-formula id="scirp.69977-formula83"><label>(8)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x15.png"  xlink:type="simple"/></disp-formula><p>This change of energy will then be put into Equation (2) with the result that.</p><p>Here the subscript k, as in Equation (8) is by [<xref ref-type="bibr" rid="scirp.69977-ref1">1</xref>] a “particle count” and we will refer to this heavily in the rest of this document. If we have Equation (8) we will, if we have an emergent field reference using a change in energy, in the Pre Planckian domain as</p><disp-formula id="scirp.69977-formula84"><label>. (9)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x16.png"  xlink:type="simple"/></disp-formula><p>Or, if the inequality is strictly adhered to</p><disp-formula id="scirp.69977-formula85"><label>. (9a)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x17.png"  xlink:type="simple"/></disp-formula><p>The smallness of the initial scale factor would be of the order of<inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x18.png" xlink:type="simple"/></inline-formula>, and we have that<inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x19.png" xlink:type="simple"/></inline-formula>, initially, and that<inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x19.png" xlink:type="simple"/></inline-formula><inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x20.png" xlink:type="simple"/></inline-formula>, and we pick <inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x19.png" xlink:type="simple"/></inline-formula><inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x20.png" xlink:type="simple"/></inline-formula><inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x21.png" xlink:type="simple"/></inline-formula> dimensionally, so then if<inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x19.png" xlink:type="simple"/></inline-formula><inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x20.png" xlink:type="simple"/></inline-formula><inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x21.png" xlink:type="simple"/></inline-formula><inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x22.png" xlink:type="simple"/></inline-formula>, we have if we use Equation (9) as an estimator, that the following has to be done to insure in pre Planckian space time, for the following to hold:</p><disp-formula id="scirp.69977-formula86"><label>(10)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x23.png"  xlink:type="simple"/></disp-formula><p>i.e. the violation of an uncertainty principle for commences for any situation which implies restraints on <inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x24.png" xlink:type="simple"/></inline-formula> when</p><disp-formula id="scirp.69977-formula87"><label>. (10a)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x25.png"  xlink:type="simple"/></disp-formula><p>For the problem represented by Equation (10a) to hold it would mean that the following Pre-Planckian Potential energy would be then small when the following Potential energy as given in Equation (11) is much smaller than the Kinetic energy given in Equation (2)</p><disp-formula id="scirp.69977-formula88"><label>. (11)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x26.png"  xlink:type="simple"/></disp-formula><p>From inspection, for Equation (11) to hold, for our physical system we would want Equation (10) to hold which would mean an extremely small Potential energy, as opposed to the large value of the Kinetic energy given in Equation (4). Hence the role of Geometrodynamics given in Equation (7) and Equation (8), will in the case of a quartic potential imply that Equation (11) as Potential energy is much smaller than the kinetic energy as represented for Pre Planckian space-time physics.</p></sec><sec id="s4"><title>4. Discussion and Conclusion</title><p>What we are doing is confirming the material given in [<xref ref-type="bibr" rid="scirp.69977-ref1">1</xref>] as well as giving an explanation for [<xref ref-type="bibr" rid="scirp.69977-ref2">2</xref>] .</p><p>The potential used, the quartic, is the simplest version of the potential systems in [<xref ref-type="bibr" rid="scirp.69977-ref1">1</xref>] and the cases of non quartic potential should be examined fully, as part of a comprehensive study. This will be part of the research project which the authors will initiate in future publications. We should keep this discussion and the discussion of scalar fields separate from the ideas given in inflation, namely of the fluctuations not necessarily having an upper bound of</p><disp-formula id="scirp.69977-formula89"><label>(12)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x27.png"  xlink:type="simple"/></disp-formula><p>Since our modeling is not predicated upon the inflationary model of cosmology but which is addressing the issue brought up in [<xref ref-type="bibr" rid="scirp.69977-ref2">2</xref>] , which is the contribution of Pre Planckian space time to cosmological evolution we wish to adhere to non inflationary treatments as to Equation (11) and Equation (12) but will adhere to the questions poised at the beginning of this document. Furthermore we will adhere to, in future documents in delineating a departure from the standard treatment of the evolution of the scalar field, as given in conventional inflation cosmology as the following</p><disp-formula id="scirp.69977-formula90"><label>(13)</label><graphic position="anchor" xlink:href="http://html.scirp.org/file/3-2180088x28.png"  xlink:type="simple"/></disp-formula><p>This has a quasi “quantum mechanical” effective white noise introduced term<inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x29.png" xlink:type="simple"/></inline-formula>, and is similar to <inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x29.png" xlink:type="simple"/></inline-formula><inline-formula><inline-graphic xlink:href="http://html.scirp.org/file/3-2180088x30.png" xlink:type="simple"/></inline-formula> in a first order differential equation being a “driving” term to a quasi chaotic oscillatory behavior to the scalar field. We argue that this Equation (13) in [<xref ref-type="bibr" rid="scirp.69977-ref3">3</xref>] is wrong, albeit well motivated by conventional inflationary cosmology and part of our future discussion will be in, for the Pre Planckian regime of space time as partly brought up in [<xref ref-type="bibr" rid="scirp.69977-ref4">4</xref>] discussing what we are putting in instead as a replacement. This Equation (13) contravenes our description of Kinetic energy as the dominant term in Pre Planckian space-time physics which deserves future developments for establishing experimental measurements.</p></sec><sec id="s5"><title>Acknowledgements</title><p>This work is supported in part by National Nature Science Foundation of China grant No. 11375279.</p></sec><sec id="s6"><title>Cite this paper</title><p>Beckwith, A.W. (2016) Addition to the Article with Stepan Moskaliuk on the Inter Relationship of Gene- ral Relativity and (Quantum) Geometrodynamics, via Use of Metric Uncertainty Principle. Journal of High Energy Physics, Gravitation and Cosmology, 2, 467-471. http://dx.doi.org/10.4236/jhepgc.2016.24040</p></sec></body><back><ref-list><title>References</title><ref id="scirp.69977-ref1"><label>1</label><mixed-citation publication-type="other" xlink:type="simple">Text of Original Article by A. Beckwith, and Stepan Moskaliuk.</mixed-citation></ref><ref id="scirp.69977-ref2"><label>2</label><mixed-citation publication-type="other" xlink:type="simple">Beckwith, A. (2016) Gedanken Experiment for Fluctuation of Mass of a Graviton, Based on the Trace of GR Stress Energy Tensor-Pre Planckian Conditions That Lead to Gaining of Graviton Mass, and Planckian Conditions That Lead to Graviton Mass Shrinking to 10?62 Grams. Journal of High Energy Physics, Gravitation and Cosmology, 2, 19-24.  
http://dx.doi.org/10.4236/jhepgc.2016.21002</mixed-citation></ref><ref id="scirp.69977-ref3"><label>3</label><mixed-citation publication-type="book" xlink:type="simple">Meszhlumian, A. (1992) Towards the Theory of Stationary Universe. In: Akerlof, C. and Srednicki, M., Eds., Texas/PASCOS 92: Relativivistic Astrophysics and Particle Cosmology, Annals of the New York Academy of Sciences, Vol. 688, 464-471.</mixed-citation></ref><ref id="scirp.69977-ref4"><label>4</label><mixed-citation publication-type="other" xlink:type="simple">Beckwith, A. (2016) Gedanken Experiment Examining How Kinetic Energy Would Dominate Potential Energy, in Pre-Planckian Space-Time Physics, and Allow Us to Avoid the BICEP 2 Mistake. Journal of High Energy Physics, Gravitation and Cosmology, 2, 75-82.  
http://dx.doi.org/10.4236/jhepgc.2016.21008</mixed-citation></ref></ref-list></back></article>