| 27 |
|
appears as an intermediate phase between the gel ($L_\beta$) and fluid |
| 28 |
|
($L_{\alpha}$) phases. The $P_{\beta'}$ phase has attracted |
| 29 |
|
substantial experimental interest over the past 30 |
| 30 |
< |
years.~\cite{Sun96,Katsaras00,Copeland80,Meyer96,Kaasgaard03}, and |
| 30 |
> |
years,~\cite{Sun96,Katsaras00,Copeland80,Meyer96,Kaasgaard03} and |
| 31 |
|
there have been a number of theoretical |
| 32 |
|
approaches~\cite{Marder84,Carlson87,Goldstein88,McCullough90,Lubensky93,Misbah98,Heimburg00,Kubica02,Bannerjee02} |
| 33 |
|
(and some heroic |
