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**Physics Note****Published**

# **Lagrangian Procedures for Higher Order Field Equations**

**C.G. Bollini; J. J. Giambiagi**

1986

[**Download PDF **0.4 MB](https://index.cbpf.br/files/publicacao/6ad2a767639f62b11adbb7ed/pdf) [**Contact owner**](mailto:apub@cbpf.br?subject=Lagrangian%20Procedures%20for%20Higher%20Order%20Field%20Equations)

## **Publication details**

<dl>

<dt>Authors</dt>
<dd>C.G. Bollini; J. J. Giambiagi</dd>

<dt>Type</dt>
<dd>Physics Note</dd>

<dt>Status</dt>
<dd>Published</dd>

<dt>Publication date</dt>
<dd>1986</dd>

<dt>Description</dt>
<dd>We present in a pedagogical way a Lagrangian procedure for the treatment of higher order field equations. We build the energy-momentum tensor and the conserved density current. In particular we discuss the case in which the derivatives appear only in the invariant D'Alembertian operator. We discuss some examples. We quantize the fields and construct the corresponding Hamiltonian which is shown not to be positive definite. We give the rules for the causal propagators.</dd>

<dt>Year</dt>
<dd>1986</dd>

<dt>Number</dt>
<dd>CBPF-NF-037/86</dd>

<dt>Linked to a thesis</dt>
<dd>No</dd>

<dt>Linked to a grant</dt>
<dd>No</dd>

</dl>

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