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Proposed Physical Examination to Identify the Vicinity of Dim Vitality Utilizing Iota Interferometry Martin L. Perl ( martin@slac.stanford.edu) SLAC National Quickening agent Lab Holger Mueller Material science Division, College California-Berkeley

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Proposed Terrestrial Experiment to Detect the Presence of Dark Energy Using Atom Interferometry Martin L. Perl ( martin@slac.stanford.edu) SLAC National Accelerator Laboratory Holger Mueller Physics Department, University California-Berkeley Talk displayed at Windows on the Universe, Chã¢teau Royal de Blois, France,, June 21 - 26, 2009

The larger part of space experts and physicists acknowledge the truth of dull vitality additionally trust it must be concentrated by implication through perception of the movements of cosmic systems [P. J. E. Peebles and B. Ratra, The Cosmological Constant and Dark Energy arXiv:astro-ph/0207347v2, (2002)] This discussion opens the exploratory inquiry of whether it is conceivable to straightforwardly identify dim vitality on earth utilizing molecule interferometry through the vicinity of dull vitality thickness. The likelihood of recognizing other powerless fields is quickly talked about

Outline of Presentation Present convictions about dim vitality. Examination of dull vitality thickness with vitality thickness of frail electric field. 3. Correlation of dull vitality thickness with vitality thickness of physical gravitational field. 4. Our suppositions about dim vitality and portrayal of the exploratory technique. 5. Comments on dim matter and zero-point vacuum vitality. Supplement A: Comparison with other test bearings for dim vitality concentrates on.

1. Present convictions about dull vitality

Magnitude of dim vitality thickness: Counting mass as vitality by means of E=Mc 2 ,the normal thickness of all vitality is the discriminating vitality r crit = 9 x10 - 10 J/m 3 r mass Â» 0.3 x r crit = 2.7 x10 - 10 J/m 3 r dim vitality Â» 0.7 x r crit = 6.3 x10 - 10 J/m 3 Use r DE to indicate r dim vitality

r DE Â» 6.3 x10 - 10 J/m 3 is a little vitality thickness however as appeared in the following segment we work with littler electric field densities in the lab Distribution of dim vitality thickness: r DE is taken to be at any rate pretty nearly consistently circulated in space

2. Examination of dull vitality thickness with vitality thickness of powerless electric field.

r DE Â» 6.3 Â\' 10 - 10 Joules/m 3 Compare to electric field of E =1 volt/m utilizing r E = electric field vitality thickness. At that point r E = e 0 E 2/2=4.4 x 10 - 12 J/m 3 This is effortlessly distinguished and measured . Along these lines we work with fields whose vitality densities are substantially less than r DE

Obvious explanations behind simplicity of working with electric fields: There is a q E power on every single charged item Electron streams offer complex, delicate, discovery systems Magnetic fields offer complex, touchy, identification strategies

Obvious purposes behind trouble or maybe outlandish possibility of working with dim vitality fields: Cannot turn dim vitality on and off. Can\'t locate a zero dull vitality field for reference. In a few speculation about dull vitality, it may not apply a power on any material protest past the gravitational power of its mass identical.

3. Correlation of dull vitality thickness with vitality thickness of physical gravitational field

r G = gravitational vitality thickness = r G = g 2/(8 p G N ) At earthâs surface r G = 5.7 Â\' 10 +10 J/m 3 and r DE/r G ~ 10 - 20 . The stage change of particles relies on the indispensable of a power over a separation. Thus we are occupied with the proportion F DE/F G. We conjecture F DE/FG ~ ( r DE/r G ) 1/2 ~ 10 - 10

4. Our suspicions about dim vitality and portrayal of the exploratory technique

Assumptions about dull vitality: A dim vitality power, F DE , exists other than the gravitational power likeness r DE . F DE is adequately neighborhood and r DE is adequately non-uniform so that F DE changes over separation of the request of a meter. F DE follows up on particles

Beam Deflector Interference borders locator Beam source Beam splitter Fig. 1 Conceptual outline of molecule interferometer The strategy: We utilize a two shaft iota interferometer with arms of unequal length and of degree around 1 meter as appeared in Fig. 1

The technique proceeded: To scan for F DE the known strengths that change the nuclear eliminate must be nulled. The impacts of electric and attractive strengths are nulled by protecting. The impact of the gravitational power is drop by the interferometry since gravity is a preserved power. Cancelation by a variable of 10 - 10 has been exhibited and we hope to have the capacity to cross out by a component 10 - 17

Sensitivity: The test\'s affectability can be tantamount to F DE/F G =f Â\' 10 - 17 where f=0 if our presumptions are false and f of the request of 0.1 if are suppositions are genuine

Unknown feeble fields: The previous exchange applies to some other obscure powerless fields.

5. Comments on dim matter and zero-point vacuum vitality.

Dark Matter: We have started to think about the impact of dull matter on this analysis. Is it a âbugâ in the investigation or an extra element of the test.

Zero-Point Vacuum Energy: We have been thinking for time in the matter of whether nuclear interferometry can be utilized to clarify the rankling boundlessness issue in zero-point vacuum vitality. No advancement.

Appendix A: Comparison with other test headings for dim vitality considers.

Idea for fitting zero-point vacuum vitality to dim vitality by searching for a lower recurrence cutoff C. Beck et al. [ C. Beck and M. C. Mackey, Electromagnetic dim vitality , Int. J. Mod. Phys., D17,71(2008); C. Beck and C Jacinto de Matos, arXiv: gr-qc/0709.237v1(2007)] have recommended that the clamor range in superconductors will diminish for frequencies above f DE = 4 x 10 12 Hz. They propose utilizing Josephson intersections for the test and trust that the same cutoff applies to zero-point vitality This thought is censured by P.Jetzer and N. Straumann [P.Jetzer and N. Straumann Has Dark Energy truly been found in the Lab? astro-ph/0411034v2, (2004)] We are wary .

h Idea for searching for impact of dull vitality on gravitational opposite square law I t is routine to characterize a trademark length, L DE , for dim vitality L DE = [ c/r DE ] 1/4 = 84 x 10 - 6 m and to look if the gravitational converse square law separates at separations < L DE = 84 x 10 - 6 m? No proof yet for such a breakdown. [D. J. Kapner et al ., Phys. Rev. Lett. 98, 021101 (2007)] Also a breakdown could be proof for a string hypothesis show and have nothing to do with dull ednrgy.

h Idea of searching for impact of dim vitality on gravitational backwards square law I t is traditional to characterize a trademark length, L DE , for dim vitality L DE = [ c/r DE ] 1/4 = 84 x 10 - 6 m and to look if the gravitational converse square law separates at separations < L DE = 84 x 10 - 6 m? No confirmation yet for such a breakdown. [D. J. Kapner et al ., Phys. Rev. Lett. 98, 021101 (2007)] Also a breakdown could be proof for a string hypothesis demonstrate and have nothing to do with dull vitality. Likewise meaning of L DE depends on dimensional investigation

h Idea for searching for a dull vitality molecule Does dim vitality have a molecule nature predictable with our 90 year old comprehension of quantum mechanics? Can this be utilized to identify r DE ? Utilize the connection between a power of reach L conveyed by a molecule of mass M : M x L =/c With L DE = 84 x 10 - 6 m Then M DE = 2.5x10 - 9 MeV/c 2 But in the event that M DE is an ordinary molecule it will go about as matter not as dim vitality .:tsl