Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Annihilation of an AB/BA interface pair in superfluid helium-3 as a simulation of cosmological brane interaction.
AU - Bradley, D. Ian
AU - Fisher, Shaun N.
AU - Guénault, A.M.
AU - Haley, Richard P.
AU - Kopu, Juha
AU - Martin, Hazel
AU - Pickett, George R.
AU - Roberts, John Edward
AU - Tsepelin, Viktor
PY - 2008/8/28
Y1 - 2008/8/28
N2 - This study presents measurements of the transport of quasiparticle excitations in the B phase of superfluid He-3 at temperatures below 0.2Tc. We find that creating and then removing a layer of A-phase superfluid leads to a measurable increase in the thermal impedance of the background B phase. This increase must be due to the survival of defects created as the AB and BA interfaces on either side of the A-phase layer annihilate. We speculate that a new type of defect may have been formed. The highly ordered A B interface may be a good analogy for branes discussed in current cosmology. If so, these experiments may provide insight into how the annihilation of branes can lead to the formation of topological defects such as cosmic strings.
AB - This study presents measurements of the transport of quasiparticle excitations in the B phase of superfluid He-3 at temperatures below 0.2Tc. We find that creating and then removing a layer of A-phase superfluid leads to a measurable increase in the thermal impedance of the background B phase. This increase must be due to the survival of defects created as the AB and BA interfaces on either side of the A-phase layer annihilate. We speculate that a new type of defect may have been formed. The highly ordered A B interface may be a good analogy for branes discussed in current cosmology. If so, these experiments may provide insight into how the annihilation of branes can lead to the formation of topological defects such as cosmic strings.
KW - superfluid
KW - helium-3
KW - interface
KW - brane
KW - topological defects
KW - A-phase
KW - B-phase
KW - transition
UR - http://www.scopus.com/inward/record.url?scp=47249103746&partnerID=8YFLogxK
U2 - 10.1098/rsta.2008.0078
DO - 10.1098/rsta.2008.0078
M3 - Journal article
VL - 366
SP - 2803
EP - 2812
JO - Philosophical Transactions A: Mathematical, Physical and Engineering Sciences
JF - Philosophical Transactions A: Mathematical, Physical and Engineering Sciences
SN - 1364-503X
IS - 1877
ER -