## Proceedings of the International School of Physics "Enrico Fermi.", Volume 37N. Zanichelli, 1967 - Nuclear physics |

### From inside the book

Results 1-3 of 57

Page 12

Ideally we should have preferred to

electronelectron interaction operator g ( r , r ' ) so that Imo = as y * ( r ) * * ( r ' ) g ( r

, r ' ) [ yfc ( ' ) ymo ( r ) — yžo ( r ' ) y d ( r ' ) ] . jo ' BJJ Unfortunately , all we know

about ...

Ideally we should have preferred to

**write**1 % , in terms of an effectiveelectronelectron interaction operator g ( r , r ' ) so that Imo = as y * ( r ) * * ( r ' ) g ( r

, r ' ) [ yfc ( ' ) ymo ( r ) — yžo ( r ' ) y d ( r ' ) ] . jo ' BJJ Unfortunately , all we know

about ...

Page 147

Let us

= - t ) . Then we expect that there exists a double - spectral representation which

embodies the analyticity in both E and v ( 32 ) PdE s dy ' 0 ( E ' , v ' ) . T ( E + inu ...

Let us

**write**42 = v ( the high - energy physicists for reasons of their own ,**write**42= - t ) . Then we expect that there exists a double - spectral representation which

embodies the analyticity in both E and v ( 32 ) PdE s dy ' 0 ( E ' , v ' ) . T ( E + inu ...

Page 179

Also , if we

i8 " ( x ) . Assuming the form ( 83 ) , and substituting in ( 82 ) , we find the result (

84 ) exp [ - 48 " ( x ) ] = 1 – ( x ) 7 ( 2 ) , where a ( x ) = 167 * q ( ) S ( 8 + 1 ) .

Also , if we

**write**8 ( x + in ) = 8 ' ( x ) + i8 " ( x ) , we have 8 ( x — in ) = _ 8 ' ( x ) +i8 " ( x ) . Assuming the form ( 83 ) , and substituting in ( 82 ) , we find the result (

84 ) exp [ - 48 " ( x ) ] = 1 – ( x ) 7 ( 2 ) , where a ( x ) = 167 * q ( ) S ( 8 + 1 ) .

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### Contents

LOMER Band theory and magnetism | 1 |

PHILLIPS Band theory of transition metals | 22 |

JACCARINO Studies of the hyperfine interaction in transi | 39 |

Copyright | |

19 other sections not shown

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### Common terms and phrases

alloys appearance approximation assume average band becomes bound boundary calculation charge complex computed condition conduction consider contribution correct correlation corresponding coupling curve defined density depends determined direction discussed effect electrons energy equation exchange existence expected expression fact factor Fermi Fermi level Fermi surface ferromagnetic field function given gives Hamiltonian host metal impurity atom increases integral interaction interesting lattice limit localized magnetic matrix elements means method moments normal Note observed obtained occur operator orbital perturbation phase Phys physical plane polarization poles positive possible potential present problem properties range relation replaced represent resonance scattering screening Sect shift shown similar simple single solution spin strong structure temperature theory tion transition metals usual wave wave functions write zero